[{"abstract":[{"text":"Point sets, geometric networks, and arrangements of hyperplanes are fundamental objects in\r\ndiscrete geometry that have captivated mathematicians for centuries, if not millennia. This\r\nthesis seeks to cast new light on these structures by illustrating specific instances where a\r\ntopological perspective, specifically through discrete Morse theory and persistent homology,\r\nprovides valuable insights.\r\n\r\nAt first glance, the topology of these geometric objects might seem uneventful: point sets\r\nessentially lack of topology, arrangements of hyperplanes are a decomposition of Rd, which\r\nis a contractible space, and the topology of a network primarily involves the enumeration\r\nof connected components and cycles within the network. However, beneath this apparent\r\nsimplicity, there lies an array of intriguing structures, a small subset of which will be uncovered\r\nin this thesis.\r\n\r\nFocused on three case studies, each addressing one of the mentioned objects, this work\r\nwill showcase connections that intertwine topology with diverse fields such as combinatorial\r\ngeometry, algorithms and data structures, and emerging applications like spatial biology.\r\n\r\n","lang":"eng"}],"oa_version":"Published Version","alternative_title":["ISTA Thesis"],"month":"03","publication_identifier":{"issn":["2663 - 337X"]},"degree_awarded":"PhD","publication_status":"published","file":[{"relation":"main_file","access_level":"open_access","content_type":"application/pdf","success":1,"file_id":"15112","checksum":"1e468bfa42a7dcf04d89f4dadc621c87","creator":"scultrer","file_size":4106872,"date_updated":"2024-03-14T08:55:07Z","file_name":"Thesis Sebastiano.pdf","date_created":"2024-03-14T08:55:07Z"},{"access_level":"closed","relation":"source_file","content_type":"application/zip","file_id":"15113","checksum":"bcbd213490f5a7e68855a092bbce93f1","creator":"scultrer","date_updated":"2024-03-14T14:14:35Z","file_size":4746234,"date_created":"2024-03-14T08:56:24Z","file_name":"Thesis (1).zip"}],"language":[{"iso":"eng"}],"related_material":{"record":[{"relation":"part_of_dissertation","id":"11660","status":"public"},{"relation":"part_of_dissertation","id":"11658","status":"public"},{"id":"13182","status":"public","relation":"part_of_dissertation"},{"relation":"part_of_dissertation","status":"public","id":"15090"},{"relation":"part_of_dissertation","id":"15091","status":"public"},{"id":"15093","status":"public","relation":"part_of_dissertation"}]},"license":"https://creativecommons.org/licenses/by-nc-sa/4.0/","ec_funded":1,"_id":"15094","type":"dissertation","tmp":{"name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","image":"/images/cc_by_nc_sa.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode","short":"CC BY-NC-SA (4.0)"},"status":"public","supervisor":[{"id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","first_name":"Herbert","full_name":"Edelsbrunner, Herbert","orcid":"0000-0002-9823-6833","last_name":"Edelsbrunner"}],"date_updated":"2024-03-20T09:36:57Z","ddc":["514","500","516"],"file_date_updated":"2024-03-14T14:14:35Z","department":[{"_id":"GradSch"},{"_id":"HeEd"}],"publisher":"Institute of Science and Technology Austria","oa":1,"has_accepted_license":"1","year":"2024","day":"08","page":"108","doi":"10.15479/at:ista:15094","date_published":"2024-03-08T00:00:00Z","date_created":"2024-03-08T15:28:10Z","project":[{"call_identifier":"H2020","_id":"266A2E9E-B435-11E9-9278-68D0E5697425","grant_number":"788183","name":"Alpha Shape Theory Extended"},{"name":"The Wittgenstein Prize","grant_number":"Z00342","call_identifier":"FWF","_id":"268116B8-B435-11E9-9278-68D0E5697425"},{"name":"Discretization in Geometry and Dynamics","grant_number":"I4887","_id":"0aa4bc98-070f-11eb-9043-e6fff9c6a316"},{"name":"Persistence and stability of geometric complexes","grant_number":"I02979-N35","_id":"2561EBF4-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"}],"citation":{"chicago":"Cultrera di Montesano, Sebastiano. “Persistence and Morse Theory for Discrete Geometric Structures.” Institute of Science and Technology Austria, 2024. https://doi.org/10.15479/at:ista:15094.","ista":"Cultrera di Montesano S. 2024. Persistence and Morse theory for discrete geometric structures. Institute of Science and Technology Austria.","mla":"Cultrera di Montesano, Sebastiano. Persistence and Morse Theory for Discrete Geometric Structures. Institute of Science and Technology Austria, 2024, doi:10.15479/at:ista:15094.","ama":"Cultrera di Montesano S. Persistence and Morse theory for discrete geometric structures. 2024. doi:10.15479/at:ista:15094","apa":"Cultrera di Montesano, S. (2024). Persistence and Morse theory for discrete geometric structures. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:15094","ieee":"S. Cultrera di Montesano, “Persistence and Morse theory for discrete geometric structures,” Institute of Science and Technology Austria, 2024.","short":"S. Cultrera di Montesano, Persistence and Morse Theory for Discrete Geometric Structures, Institute of Science and Technology Austria, 2024."},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","author":[{"id":"34D2A09C-F248-11E8-B48F-1D18A9856A87","first_name":"Sebastiano","last_name":"Cultrera di Montesano","full_name":"Cultrera di Montesano, Sebastiano","orcid":"0000-0001-6249-0832"}],"article_processing_charge":"No","title":"Persistence and Morse theory for discrete geometric structures"},{"project":[{"call_identifier":"H2020","_id":"266A2E9E-B435-11E9-9278-68D0E5697425","grant_number":"788183","name":"Alpha Shape Theory Extended"},{"_id":"268116B8-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"Z00342","name":"The Wittgenstein Prize"},{"_id":"bd9ca328-d553-11ed-ba76-dc4f890cfe62","call_identifier":"H2020","grant_number":"101019564","name":"The design and evaluation of modern fully dynamic data structures"},{"_id":"34def286-11ca-11ed-8bc3-da5948e1613c","grant_number":"Z00422","name":"Wittgenstein Award - Monika Henzinger"},{"_id":"bd9e3a2e-d553-11ed-ba76-8aa684ce17fe","name":"Fast Algorithms for a Reactive Network Layer","grant_number":"P33775 "}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","citation":{"ieee":"S. Cultrera di Montesano, H. Edelsbrunner, M. H. Henzinger, and L. Ost, “Dynamically maintaining the persistent homology of time series,” in Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), Alexandria, VA, USA, 2024, pp. 243–295.","short":"S. Cultrera di Montesano, H. Edelsbrunner, M.H. Henzinger, L. Ost, in:, D.P. Woodruff (Ed.), Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), Society for Industrial and Applied Mathematics, 2024, pp. 243–295.","ama":"Cultrera di Montesano S, Edelsbrunner H, Henzinger MH, Ost L. Dynamically maintaining the persistent homology of time series. In: Woodruff DP, ed. Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA). Society for Industrial and Applied Mathematics; 2024:243-295. doi:10.1137/1.9781611977912.11","apa":"Cultrera di Montesano, S., Edelsbrunner, H., Henzinger, M. H., & Ost, L. (2024). Dynamically maintaining the persistent homology of time series. In D. P. Woodruff (Ed.), Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA) (pp. 243–295). Alexandria, VA, USA: Society for Industrial and Applied Mathematics. https://doi.org/10.1137/1.9781611977912.11","mla":"Cultrera di Montesano, Sebastiano, et al. “Dynamically Maintaining the Persistent Homology of Time Series.” Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), edited by David P. Woodruff, Society for Industrial and Applied Mathematics, 2024, pp. 243–95, doi:10.1137/1.9781611977912.11.","ista":"Cultrera di Montesano S, Edelsbrunner H, Henzinger MH, Ost L. 2024. Dynamically maintaining the persistent homology of time series. Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA). SODA: Symposium on Discrete Algorigthms, 243–295.","chicago":"Cultrera di Montesano, Sebastiano, Herbert Edelsbrunner, Monika H Henzinger, and Lara Ost. “Dynamically Maintaining the Persistent Homology of Time Series.” In Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA), edited by David P. Woodruff, 243–95. Society for Industrial and Applied Mathematics, 2024. https://doi.org/10.1137/1.9781611977912.11."},"editor":[{"first_name":"David P.","full_name":"Woodruff, David P.","last_name":"Woodruff"}],"title":"Dynamically maintaining the persistent homology of time series","author":[{"first_name":"Sebastiano","id":"34D2A09C-F248-11E8-B48F-1D18A9856A87","last_name":"Cultrera di Montesano","full_name":"Cultrera di Montesano, Sebastiano","orcid":"0000-0001-6249-0832"},{"first_name":"Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner"},{"last_name":"Henzinger","full_name":"Henzinger, Monika H","orcid":"0000-0002-5008-6530","first_name":"Monika H","id":"540c9bbd-f2de-11ec-812d-d04a5be85630"},{"first_name":"Lara","last_name":"Ost","full_name":"Ost, Lara"}],"article_processing_charge":"No","external_id":{"arxiv":["2311.01115"]},"acknowledgement":"The first and second authors are funded by the European Research Council under the European Union’s Horizon 2020 research and innovation programme, ERC grant no. 788183,“Alpha Shape Theory Extended (Alpha)”, by the Wittgenstein Prize, FWF grant no. Z 342-N31, and by the DFG Collaborative Research Center TRR 109, FWF grant no. I 02979-N35.The third author received funding by the European Research Council under the European Union’s Horizon 2020research and innovation programme, ERC grant no. 101019564, “The Design of Modern Fully Dynamic DataStructures (MoDynStruct)”, and by the Austrian Science Fund through the Wittgenstein Prize with FWF grant no. Z 422-N, and also by FWF grant no. I 5982-N, and by FWF grant no. P 33775-N, with additional funding from the netidee SCIENCE Stiftung, 2020–2024. The fourth author is funded by the Vienna Graduate School on Computational Optimization, FWF project no. W1260-N35.","publisher":"Society for Industrial and Applied Mathematics","quality_controlled":"1","oa":1,"day":"04","publication":"Proceedings of the 2024 Annual ACM-SIAM Symposium on Discrete Algorithms (SODA)","year":"2024","date_published":"2024-01-04T00:00:00Z","doi":"10.1137/1.9781611977912.11","date_created":"2024-03-08T10:27:39Z","page":"243 - 295","_id":"15093","status":"public","type":"conference","conference":{"name":"SODA: Symposium on Discrete Algorigthms","start_date":"2024-01-07","location":"Alexandria, VA, USA","end_date":"2024-01-10"},"date_updated":"2024-03-20T09:36:56Z","department":[{"_id":"HeEd"},{"_id":"MoHe"}],"oa_version":"Preprint","abstract":[{"text":"We present a dynamic data structure for maintaining the persistent homology of a time series of real numbers. The data structure supports local operations, including the insertion and deletion of an item and the cutting and concatenating of lists, each in time O(log n + k), in which n counts the critical items and k the changes in the augmented persistence diagram. To achieve this, we design a tailor-made tree structure with an unconventional representation, referred to as banana tree, which may be useful in its own right.","lang":"eng"}],"month":"01","main_file_link":[{"url":"https://arxiv.org/abs/2311.01115","open_access":"1"}],"language":[{"iso":"eng"}],"publication_identifier":{"eisbn":["9781611977912"]},"publication_status":"published","related_material":{"record":[{"relation":"dissertation_contains","status":"public","id":"15094"}]},"ec_funded":1},{"author":[{"last_name":"Cultrera di Montesano","orcid":"0000-0001-6249-0832","full_name":"Cultrera di Montesano, Sebastiano","first_name":"Sebastiano","id":"34D2A09C-F248-11E8-B48F-1D18A9856A87"},{"id":"2B23F01E-F248-11E8-B48F-1D18A9856A87","first_name":"Ondrej","full_name":"Draganov, Ondrej","last_name":"Draganov"},{"first_name":"Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner"},{"id":"f86f7148-b140-11ec-9577-95435b8df824","first_name":"Morteza","last_name":"Saghafian","full_name":"Saghafian, Morteza"}],"external_id":{"arxiv":["2212.03128"]},"article_processing_charge":"No","department":[{"_id":"HeEd"}],"title":"Chromatic alpha complexes","date_updated":"2024-03-20T09:36:56Z","citation":{"chicago":"Cultrera di Montesano, Sebastiano, Ondrej Draganov, Herbert Edelsbrunner, and Morteza Saghafian. “Chromatic Alpha Complexes.” ArXiv, n.d.","ista":"Cultrera di Montesano S, Draganov O, Edelsbrunner H, Saghafian M. Chromatic alpha complexes. arXiv, 2212.03128.","mla":"Cultrera di Montesano, Sebastiano, et al. “Chromatic Alpha Complexes.” ArXiv, 2212.03128.","apa":"Cultrera di Montesano, S., Draganov, O., Edelsbrunner, H., & Saghafian, M. (n.d.). Chromatic alpha complexes. arXiv.","ama":"Cultrera di Montesano S, Draganov O, Edelsbrunner H, Saghafian M. Chromatic alpha complexes. arXiv.","ieee":"S. Cultrera di Montesano, O. Draganov, H. Edelsbrunner, and M. Saghafian, “Chromatic alpha complexes,” arXiv. .","short":"S. Cultrera di Montesano, O. Draganov, H. Edelsbrunner, M. Saghafian, ArXiv (n.d.)."},"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","type":"preprint","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","_id":"15091","article_number":"2212.03128","related_material":{"record":[{"id":"15094","status":"public","relation":"dissertation_contains"}]},"date_published":"2024-02-07T00:00:00Z","license":"https://creativecommons.org/licenses/by/4.0/","date_created":"2024-03-08T10:13:59Z","year":"2024","publication_status":"submitted","day":"07","publication":"arXiv","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://arxiv.org/abs/2212.03128","open_access":"1"}],"oa":1,"month":"02","abstract":[{"lang":"eng","text":"Motivated by applications in the medical sciences, we study finite chromatic\r\nsets in Euclidean space from a topological perspective. Based on the persistent\r\nhomology for images, kernels and cokernels, we design provably stable\r\nhomological quantifiers that describe the geometric micro- and macro-structure\r\nof how the color classes mingle. These can be efficiently computed using\r\nchromatic variants of Delaunay and alpha complexes, and code that does these\r\ncomputations is provided."}],"oa_version":"Preprint"},{"project":[{"call_identifier":"H2020","_id":"0aacfa84-070f-11eb-9043-d7eb2c709234","grant_number":"819603","name":"Learning the shape of synaptic plasticity rules for neuronal architectures and function through machine learning."}],"title":"Co-dependent excitatory and inhibitory plasticity accounts for quick, stable and long-lasting memories in biological networks","author":[{"last_name":"Agnes","full_name":"Agnes, Everton J.","first_name":"Everton J."},{"last_name":"Vogels","full_name":"Vogels, Tim P","orcid":"0000-0003-3295-6181","first_name":"Tim P","id":"CB6FF8D2-008F-11EA-8E08-2637E6697425"}],"article_processing_charge":"Yes (via OA deal)","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"ista":"Agnes EJ, Vogels TP. 2024. Co-dependent excitatory and inhibitory plasticity accounts for quick, stable and long-lasting memories in biological networks. Nature Neuroscience.","chicago":"Agnes, Everton J., and Tim P Vogels. “Co-Dependent Excitatory and Inhibitory Plasticity Accounts for Quick, Stable and Long-Lasting Memories in Biological Networks.” Nature Neuroscience. Springer Nature, 2024. https://doi.org/10.1038/s41593-024-01597-4.","short":"E.J. Agnes, T.P. Vogels, Nature Neuroscience (2024).","ieee":"E. J. Agnes and T. P. Vogels, “Co-dependent excitatory and inhibitory plasticity accounts for quick, stable and long-lasting memories in biological networks,” Nature Neuroscience. Springer Nature, 2024.","ama":"Agnes EJ, Vogels TP. Co-dependent excitatory and inhibitory plasticity accounts for quick, stable and long-lasting memories in biological networks. Nature Neuroscience. 2024. doi:10.1038/s41593-024-01597-4","apa":"Agnes, E. J., & Vogels, T. P. (2024). Co-dependent excitatory and inhibitory plasticity accounts for quick, stable and long-lasting memories in biological networks. Nature Neuroscience. Springer Nature. https://doi.org/10.1038/s41593-024-01597-4","mla":"Agnes, Everton J., and Tim P. Vogels. “Co-Dependent Excitatory and Inhibitory Plasticity Accounts for Quick, Stable and Long-Lasting Memories in Biological Networks.” Nature Neuroscience, Springer Nature, 2024, doi:10.1038/s41593-024-01597-4."},"quality_controlled":"1","publisher":"Springer Nature","oa":1,"acknowledgement":"We thank C. Currin, B. Podlaski and the members of the Vogels group for fruitful discussions. E.J.A. and T.P.V. were supported by a Research Project Grant from the Leverhulme Trust (RPG-2016-446; TPV), a Sir Henry Dale Fellowship from the Wellcome Trust and the Royal Society (WT100000; T.P.V.), a Wellcome Trust Senior Research Fellowship (214316/Z/18/Z; T.P.V.) and a European Research Council Consolidator Grant (SYNAPSEEK, 819603; T.P.V.). For the purpose of open access, the authors have applied a CC BY public copyright license to any author accepted manuscript version arising from this submission. Open access funding provided by University of Basel.","doi":"10.1038/s41593-024-01597-4","date_published":"2024-03-20T00:00:00Z","date_created":"2024-03-24T23:01:00Z","day":"20","publication":"Nature Neuroscience","year":"2024","status":"public","article_type":"original","type":"journal_article","_id":"15171","department":[{"_id":"TiVo"}],"date_updated":"2024-03-25T07:04:05Z","month":"03","scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1038/s41593-024-01597-4"}],"oa_version":"Published Version","abstract":[{"text":"The brain’s functionality is developed and maintained through synaptic plasticity. As synapses undergo plasticity, they also affect each other. The nature of such ‘co-dependency’ is difficult to disentangle experimentally, because multiple synapses must be monitored simultaneously. To help understand the experimentally observed phenomena, we introduce a framework that formalizes synaptic co-dependency between different connection types. The resulting model explains how inhibition can gate excitatory plasticity while neighboring excitatory–excitatory interactions determine the strength of long-term potentiation. Furthermore, we show how the interplay between excitatory and inhibitory synapses can account for the quick rise and long-term stability of a variety of synaptic weight profiles, such as orientation tuning and dendritic clustering of co-active synapses. In recurrent neuronal networks, co-dependent plasticity produces rich and stable motor cortex-like dynamics with high input sensitivity. Our results suggest an essential role for the neighborly synaptic interaction during learning, connecting micro-level physiology with network-wide phenomena.","lang":"eng"}],"ec_funded":1,"language":[{"iso":"eng"}],"publication_identifier":{"issn":["1097-6256"],"eissn":["1546-1726"]},"publication_status":"epub_ahead"},{"department":[{"_id":"JoMa"}],"file_date_updated":"2024-03-25T08:02:43Z","ddc":["550"],"date_updated":"2024-03-25T08:04:13Z","status":"public","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"article_type":"original","type":"journal_article","_id":"15170","volume":964,"language":[{"iso":"eng"}],"file":[{"date_created":"2024-03-25T08:02:43Z","file_name":"2024_AstrophysicalJourn_Greene.pdf","date_updated":"2024-03-25T08:02:43Z","file_size":2700137,"creator":"dernst","checksum":"389a880e176799d5c062ea7cb82d08c9","file_id":"15176","success":1,"content_type":"application/pdf","access_level":"open_access","relation":"main_file"}],"publication_status":"published","publication_identifier":{"issn":["0004-637X"],"eissn":["1538-4357"]},"intvolume":" 964","month":"03","scopus_import":"1","oa_version":"Published Version","abstract":[{"text":"The James Webb Space Telescope is revealing a new population of dust-reddened broad-line active galactic nuclei (AGN) at redshifts z ≳ 5. Here we present deep NIRSpec/Prism spectroscopy from the Cycle 1 Treasury program Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) of 15 AGN candidates selected to be compact, with red continua in the rest-frame optical but with blue slopes in the UV. From NIRCam photometry alone, they could have been dominated by dusty star formation or an AGN. Here we show that the majority of the compact red sources in UNCOVER are dust-reddened AGN: 60% show definitive evidence for broad-line Hα with a FWHM > 2000 km s −1, 20% of the current data are inconclusive, and 20% are brown dwarf stars. We propose an updated photometric criterion to select red z > 5 AGN that excludes brown dwarfs and is expected to yield >80% AGN. Remarkably, among all zphot > 5 galaxies with F277W – F444W > 1 in UNCOVER at least 33% are AGN regardless of compactness, climbing to at least 80% AGN for sources with F277W – F444W > 1.6. The confirmed AGN have black hole masses of 107–109M⊙. While their UV luminosities (−16 > MUV > −20 AB mag) are low compared to UV-selected AGN at these epochs, consistent with percent-level scattered AGN light or low levels of unobscured star formation, the inferred bolometric luminosities are typical of 107–109M⊙ black holes radiating at ∼10%–40% the Eddington limit. The number densities are surprisingly high at ∼10−5 Mpc−3 mag−1, 100 times more common than the faintest UV-selected quasars, while accounting for ∼1% of the UV-selected galaxies. While their UV faintness suggests they may not contribute strongly to reionization, their ubiquity poses challenges to models of black hole growth.","lang":"eng"}],"title":"UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources at z > 5","article_processing_charge":"Yes","external_id":{"arxiv":["2309.05714"]},"author":[{"first_name":"Jenny E.","last_name":"Greene","full_name":"Greene, Jenny E."},{"full_name":"Labbe, Ivo","last_name":"Labbe","first_name":"Ivo"},{"first_name":"Andy D.","full_name":"Goulding, Andy D.","last_name":"Goulding"},{"first_name":"Lukas J.","full_name":"Furtak, Lukas J.","last_name":"Furtak"},{"full_name":"Chemerynska, Iryna","last_name":"Chemerynska","first_name":"Iryna"},{"first_name":"Vasily","last_name":"Kokorev","full_name":"Kokorev, Vasily"},{"last_name":"Dayal","full_name":"Dayal, Pratika","first_name":"Pratika"},{"last_name":"Volonteri","full_name":"Volonteri, Marta","first_name":"Marta"},{"first_name":"Christina C.","full_name":"Williams, Christina C.","last_name":"Williams"},{"first_name":"Bingjie","last_name":"Wang","full_name":"Wang, Bingjie"},{"first_name":"David J.","full_name":"Setton, David J.","last_name":"Setton"},{"full_name":"Burgasser, Adam J.","last_name":"Burgasser","first_name":"Adam J."},{"first_name":"Rachel","last_name":"Bezanson","full_name":"Bezanson, Rachel"},{"full_name":"Atek, Hakim","last_name":"Atek","first_name":"Hakim"},{"last_name":"Brammer","full_name":"Brammer, Gabriel","first_name":"Gabriel"},{"full_name":"Cutler, Sam E.","last_name":"Cutler","first_name":"Sam E."},{"full_name":"Feldmann, Robert","last_name":"Feldmann","first_name":"Robert"},{"last_name":"Fujimoto","full_name":"Fujimoto, Seiji","first_name":"Seiji"},{"first_name":"Karl","full_name":"Glazebrook, Karl","last_name":"Glazebrook"},{"first_name":"Anna","full_name":"De Graaff, Anna","last_name":"De Graaff"},{"last_name":"Khullar","full_name":"Khullar, Gourav","first_name":"Gourav"},{"first_name":"Joel","full_name":"Leja, Joel","last_name":"Leja"},{"last_name":"Marchesini","full_name":"Marchesini, Danilo","first_name":"Danilo"},{"last_name":"Maseda","full_name":"Maseda, Michael V.","first_name":"Michael V."},{"last_name":"Matthee","full_name":"Matthee, Jorryt J","orcid":"0000-0003-2871-127X","first_name":"Jorryt J","id":"7439a258-f3c0-11ec-9501-9df22fe06720"},{"first_name":"Tim B.","full_name":"Miller, Tim B.","last_name":"Miller"},{"first_name":"Rohan P.","last_name":"Naidu","full_name":"Naidu, Rohan P."},{"full_name":"Nanayakkara, Themiya","last_name":"Nanayakkara","first_name":"Themiya"},{"first_name":"Pascal A.","last_name":"Oesch","full_name":"Oesch, Pascal A."},{"full_name":"Pan, Richard","last_name":"Pan","first_name":"Richard"},{"first_name":"Casey","full_name":"Papovich, Casey","last_name":"Papovich"},{"first_name":"Sedona H.","full_name":"Price, Sedona H.","last_name":"Price"},{"first_name":"Pieter","full_name":"Van Dokkum, Pieter","last_name":"Van Dokkum"},{"first_name":"John R.","full_name":"Weaver, John R.","last_name":"Weaver"},{"first_name":"Katherine E.","last_name":"Whitaker","full_name":"Whitaker, Katherine E."},{"first_name":"Adi","last_name":"Zitrin","full_name":"Zitrin, Adi"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Greene, Jenny E., et al. “UNCOVER Spectroscopy Confirms the Surprising Ubiquity of Active Galactic Nuclei in Red Sources at z > 5.” Astrophysical Journal, vol. 964, 39, IOP Publishing, 2024, doi:10.3847/1538-4357/ad1e5f.","ama":"Greene JE, Labbe I, Goulding AD, et al. UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources at z > 5. Astrophysical Journal. 2024;964. doi:10.3847/1538-4357/ad1e5f","apa":"Greene, J. E., Labbe, I., Goulding, A. D., Furtak, L. J., Chemerynska, I., Kokorev, V., … Zitrin, A. (2024). UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources at z > 5. Astrophysical Journal. IOP Publishing. https://doi.org/10.3847/1538-4357/ad1e5f","ieee":"J. E. Greene et al., “UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources at z > 5,” Astrophysical Journal, vol. 964. IOP Publishing, 2024.","short":"J.E. Greene, I. Labbe, A.D. Goulding, L.J. Furtak, I. Chemerynska, V. Kokorev, P. Dayal, M. Volonteri, C.C. Williams, B. Wang, D.J. Setton, A.J. Burgasser, R. Bezanson, H. Atek, G. Brammer, S.E. Cutler, R. Feldmann, S. Fujimoto, K. Glazebrook, A. De Graaff, G. Khullar, J. Leja, D. Marchesini, M.V. Maseda, J.J. Matthee, T.B. Miller, R.P. Naidu, T. Nanayakkara, P.A. Oesch, R. Pan, C. Papovich, S.H. Price, P. Van Dokkum, J.R. Weaver, K.E. Whitaker, A. Zitrin, Astrophysical Journal 964 (2024).","chicago":"Greene, Jenny E., Ivo Labbe, Andy D. Goulding, Lukas J. Furtak, Iryna Chemerynska, Vasily Kokorev, Pratika Dayal, et al. “UNCOVER Spectroscopy Confirms the Surprising Ubiquity of Active Galactic Nuclei in Red Sources at z > 5.” Astrophysical Journal. IOP Publishing, 2024. https://doi.org/10.3847/1538-4357/ad1e5f.","ista":"Greene JE, Labbe I, Goulding AD, Furtak LJ, Chemerynska I, Kokorev V, Dayal P, Volonteri M, Williams CC, Wang B, Setton DJ, Burgasser AJ, Bezanson R, Atek H, Brammer G, Cutler SE, Feldmann R, Fujimoto S, Glazebrook K, De Graaff A, Khullar G, Leja J, Marchesini D, Maseda MV, Matthee JJ, Miller TB, Naidu RP, Nanayakkara T, Oesch PA, Pan R, Papovich C, Price SH, Van Dokkum P, Weaver JR, Whitaker KE, Zitrin A. 2024. UNCOVER spectroscopy confirms the surprising ubiquity of active galactic nuclei in red sources at z > 5. Astrophysical Journal. 964, 39."},"article_number":"39","date_created":"2024-03-24T23:00:59Z","doi":"10.3847/1538-4357/ad1e5f","date_published":"2024-03-01T00:00:00Z","publication":"Astrophysical Journal","day":"01","year":"2024","has_accepted_license":"1","oa":1,"quality_controlled":"1","publisher":"IOP Publishing","acknowledgement":"J.E.G. and A.D.G acknowledge support from NSF/AAG grant No. 1007094, and J.E.G. also acknowledges support from NSF/AAG grant No. 1007052. A.Z. acknowledges support by grant No. 2020750 from the United States-Israel Binational Science Foundation (BSF) and grant No. 2109066 from the United States National Science Foundation (NSF), and by the Ministry of Science & Technology of Israel. The Cosmic Dawn Center is funded by the Danish National Research Foundation (DNRF) under grant No. 140. This work has received funding from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract number MB22.00072, as well as from the Swiss National Science Foundation (SNSF) through project grant 200020_207349. P.D. acknowledges support from the NWO grant 016.VIDI.189.162 (\"ODIN\") and from the European Commission's and University of Groningen's CO-FUND Rosalind Franklin program. K.G. and T.N. acknowledge support from Australian Research Council Laureate Fellowship FL180100060. H.A. and I.C. acknowledge support from CNES, focused on the JWST mission, and the Programme National Cosmology and Galaxies (PNCG) of CNRS/INSU with INP and IN2P3, cofunded by CEA and CNES. R.P.N. acknowledges funding from JWST programs GO-1933 and GO-2279. Support for this work was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. The research of C.C.W. is supported by NOIRLab, which is managed by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. B.W. acknowledges support from JWST-GO-02561.022-A. A.J.B. acknowledges funding support from NASA/ADAP grant 21-ADAP21-0187. Support for this work was provided by The Brinson Foundation through a Brinson Prize Fellowship grant. R.P.N. acknowledges support for this work provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. C.P. thanks Marsha and Ralph Schilling for the generous support of this research."},{"title":"Hardness of linearly ordered 4-colouring of 3-colourable 3-uniform hypergraphs","author":[{"id":"3E8AF77E-F248-11E8-B48F-1D18A9856A87","first_name":"Marek","full_name":"Filakovský, Marek","last_name":"Filakovský"},{"first_name":"Tamio Vesa","last_name":"Nakajima","full_name":"Nakajima, Tamio Vesa"},{"orcid":"0000-0003-1245-3456","full_name":"Opršal, Jakub","last_name":"Opršal","first_name":"Jakub","id":"ec596741-c539-11ec-b829-c79322a91242"},{"last_name":"Tasinato","full_name":"Tasinato, Gianluca","first_name":"Gianluca","id":"0433290C-AF8F-11E9-A4C7-F729E6697425"},{"full_name":"Wagner, Uli","orcid":"0000-0002-1494-0568","last_name":"Wagner","first_name":"Uli","id":"36690CA2-F248-11E8-B48F-1D18A9856A87"}],"article_processing_charge":"No","external_id":{"arxiv":["2312.12981"]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Filakovský, Marek, et al. “Hardness of Linearly Ordered 4-Colouring of 3-Colourable 3-Uniform Hypergraphs.” 41st International Symposium on Theoretical Aspects of Computer Science, vol. 289, 34, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2024, doi:10.4230/LIPIcs.STACS.2024.34.","apa":"Filakovský, M., Nakajima, T. V., Opršal, J., Tasinato, G., & Wagner, U. (2024). Hardness of linearly ordered 4-colouring of 3-colourable 3-uniform hypergraphs. In 41st International Symposium on Theoretical Aspects of Computer Science (Vol. 289). Clermont-Ferrand, France: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.STACS.2024.34","ama":"Filakovský M, Nakajima TV, Opršal J, Tasinato G, Wagner U. Hardness of linearly ordered 4-colouring of 3-colourable 3-uniform hypergraphs. In: 41st International Symposium on Theoretical Aspects of Computer Science. Vol 289. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2024. doi:10.4230/LIPIcs.STACS.2024.34","short":"M. Filakovský, T.V. Nakajima, J. Opršal, G. Tasinato, U. Wagner, in:, 41st International Symposium on Theoretical Aspects of Computer Science, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2024.","ieee":"M. Filakovský, T. V. Nakajima, J. Opršal, G. Tasinato, and U. Wagner, “Hardness of linearly ordered 4-colouring of 3-colourable 3-uniform hypergraphs,” in 41st International Symposium on Theoretical Aspects of Computer Science, Clermont-Ferrand, France, 2024, vol. 289.","chicago":"Filakovský, Marek, Tamio Vesa Nakajima, Jakub Opršal, Gianluca Tasinato, and Uli Wagner. “Hardness of Linearly Ordered 4-Colouring of 3-Colourable 3-Uniform Hypergraphs.” In 41st International Symposium on Theoretical Aspects of Computer Science, Vol. 289. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2024. https://doi.org/10.4230/LIPIcs.STACS.2024.34.","ista":"Filakovský M, Nakajima TV, Opršal J, Tasinato G, Wagner U. 2024. Hardness of linearly ordered 4-colouring of 3-colourable 3-uniform hypergraphs. 41st International Symposium on Theoretical Aspects of Computer Science. STACS: Symposium on Theoretical Aspects of Computer Science, LIPIcs, vol. 289, 34."},"project":[{"grant_number":"P31312","name":"Algorithms for Embeddings and Homotopy Theory","_id":"26611F5C-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"name":"IST-BRIDGE: International postdoctoral program","grant_number":"101034413","call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c"}],"article_number":"34","doi":"10.4230/LIPIcs.STACS.2024.34","date_published":"2024-03-01T00:00:00Z","date_created":"2024-03-24T23:00:59Z","day":"01","publication":"41st International Symposium on Theoretical Aspects of Computer Science","has_accepted_license":"1","year":"2024","publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","quality_controlled":"1","oa":1,"acknowledgement":"Marek Filakovský: This research was supported by Charles University (project PRIMUS/\r\n21/SCI/014), the Austrian Science Fund (FWF project P31312-N35), and MSCAfellow5_MUNI\r\n(CZ.02.01.01/00/22_010/0003229). Tamio-Vesa Nakajima: This research was funded by UKRI EP/X024431/1 and by a Clarendon Fund Scholarship. All data is provided in full in the results section of this paper. Jakub Opršal: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No 101034413. Uli Wagner: This research was supported by the Austrian Science Fund (FWF project P31312-N35).","department":[{"_id":"UlWa"}],"file_date_updated":"2024-03-25T07:44:30Z","ddc":["510"],"date_updated":"2024-03-25T07:45:54Z","status":"public","type":"conference","conference":{"start_date":"2024-03-12","end_date":"2024-03-14","location":"Clermont-Ferrand, France","name":"STACS: Symposium on Theoretical Aspects of Computer Science"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"_id":"15168","volume":289,"ec_funded":1,"file":[{"date_updated":"2024-03-25T07:44:30Z","file_size":927290,"creator":"dernst","date_created":"2024-03-25T07:44:30Z","file_name":"2024_LIPICs_Filakovsky.pdf","content_type":"application/pdf","access_level":"open_access","relation":"main_file","checksum":"0524d4189fd1ed08989546511343edf3","file_id":"15175","success":1}],"language":[{"iso":"eng"}],"publication_identifier":{"isbn":["9783959773119"],"eissn":["1868-8969"]},"publication_status":"published","month":"03","intvolume":" 289","alternative_title":["LIPIcs"],"scopus_import":"1","oa_version":"Published Version","abstract":[{"text":"A linearly ordered (LO) k-colouring of a hypergraph is a colouring of its vertices with colours 1, … , k such that each edge contains a unique maximal colour. Deciding whether an input hypergraph admits LO k-colouring with a fixed number of colours is NP-complete (and in the special case of graphs, LO colouring coincides with the usual graph colouring). Here, we investigate the complexity of approximating the \"linearly ordered chromatic number\" of a hypergraph. We prove that the following promise problem is NP-complete: Given a 3-uniform hypergraph, distinguish between the case that it is LO 3-colourable, and the case that it is not even LO 4-colourable. We prove this result by a combination of algebraic, topological, and combinatorial methods, building on and extending a topological approach for studying approximate graph colouring introduced by Krokhin, Opršal, Wrochna, and Živný (2023).","lang":"eng"}]},{"year":"2024","has_accepted_license":"1","publication":"Medical Engineering and Physics","day":"01","date_created":"2024-03-24T23:00:58Z","date_published":"2024-04-01T00:00:00Z","doi":"10.1016/j.medengphy.2024.104143","acknowledgement":"The authors declare no conflict of interest related to this study. This project was funded by the Gesellschaft fuer Forschungsfoerderung Niederoesterreich m.b.H. Life Science Call 2017 Grant No. LS17004 and Science call 2019 Dissertationen Grant No. SC19014. No ethical approval was required for this study.","oa":1,"publisher":"Elsevier","quality_controlled":"1","citation":{"mla":"Silva-Henao, Juan D., et al. “Critical Loss of Primary Implant Stability in Osteosynthesis Locking Screws under Cyclic Overloading.” Medical Engineering and Physics, vol. 126, 104143, Elsevier, 2024, doi:10.1016/j.medengphy.2024.104143.","apa":"Silva-Henao, J. D., Schober, S., Pahr, D. H., & Reisinger, A. G. (2024). Critical loss of primary implant stability in osteosynthesis locking screws under cyclic overloading. Medical Engineering and Physics. Elsevier. https://doi.org/10.1016/j.medengphy.2024.104143","ama":"Silva-Henao JD, Schober S, Pahr DH, Reisinger AG. Critical loss of primary implant stability in osteosynthesis locking screws under cyclic overloading. Medical Engineering and Physics. 2024;126. doi:10.1016/j.medengphy.2024.104143","ieee":"J. D. Silva-Henao, S. Schober, D. H. Pahr, and A. G. Reisinger, “Critical loss of primary implant stability in osteosynthesis locking screws under cyclic overloading,” Medical Engineering and Physics, vol. 126. Elsevier, 2024.","short":"J.D. Silva-Henao, S. Schober, D.H. Pahr, A.G. Reisinger, Medical Engineering and Physics 126 (2024).","chicago":"Silva-Henao, Juan D., Sophie Schober, Dieter H. Pahr, and Andreas G. Reisinger. “Critical Loss of Primary Implant Stability in Osteosynthesis Locking Screws under Cyclic Overloading.” Medical Engineering and Physics. Elsevier, 2024. https://doi.org/10.1016/j.medengphy.2024.104143.","ista":"Silva-Henao JD, Schober S, Pahr DH, Reisinger AG. 2024. Critical loss of primary implant stability in osteosynthesis locking screws under cyclic overloading. Medical Engineering and Physics. 126, 104143."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"Yes (in subscription journal)","author":[{"first_name":"Juan D.","last_name":"Silva-Henao","full_name":"Silva-Henao, Juan D."},{"id":"80b0a0ef-4b9f-11ec-b119-8d9d94c4a1d8","first_name":"Sophie","last_name":"Schober","full_name":"Schober, Sophie"},{"last_name":"Pahr","full_name":"Pahr, Dieter H.","first_name":"Dieter H."},{"first_name":"Andreas G.","last_name":"Reisinger","full_name":"Reisinger, Andreas G."}],"title":"Critical loss of primary implant stability in osteosynthesis locking screws under cyclic overloading","article_number":"104143","publication_status":"published","publication_identifier":{"issn":["1350-4533"],"eissn":["1873-4030"]},"language":[{"iso":"eng"}],"file":[{"date_updated":"2024-03-25T08:29:52Z","file_size":10039402,"creator":"dernst","date_created":"2024-03-25T08:29:52Z","file_name":"2024_MedEngineeringPhysics_SilvaHenao.pdf","content_type":"application/pdf","access_level":"open_access","relation":"main_file","file_id":"15177","checksum":"974acbf2731e7382dcf5920ac762e551","success":1}],"volume":126,"abstract":[{"lang":"eng","text":"Primary implant stability, which refers to the stability of the implant during the initial healing period is a crucial factor in determining the long-term success of the implant and lays the foundation for secondary implant stability achieved through osseointegration. Factors affecting primary stability include implant design, surgical technique, and patient-specific factors like bone quality and morphology. In vivo, the cyclic nature of anatomical loading puts osteosynthesis locking screws under dynamic loads, which can lead to the formation of micro cracks and defects that slowly degrade the mechanical connection between the bone and screw, thus compromising the initial stability and secondary stability of the implant. Monotonic quasi-static loading used for testing the holding capacity of implanted screws is not well suited to capture this behavior since it cannot capture the progressive deterioration of peri‑implant bone at small displacements. In order to address this issue, this study aims to determine a critical point of loss of primary implant stability in osteosynthesis locking screws under cyclic overloading by investigating the evolution of damage, dissipated energy, and permanent deformation. A custom-made test setup was used to test implanted 2.5 mm locking screws under cyclic overloading test. For each loading cycle, maximum forces and displacement were recorded as well as initial and final cycle displacements and used to calculate damage and energy dissipation evolution. The results of this study demonstrate that for axial, shear, and mixed loading significant damage and energy dissipation can be observed at approximately 20 % of the failure force. Additionally, at this load level, permanent deformations on the screw-bone interface were found to be in the range of 50 to 150 mm which promotes osseointegration and secondary implant stability. This research can assist surgeons in making informed preoperative decisions by providing a better understanding of the critical point of loss of primary implant stability, thus improving the long-term success of the implant and overall patient satisfaction."}],"oa_version":"Published Version","scopus_import":"1","intvolume":" 126","month":"04","date_updated":"2024-03-25T08:31:01Z","ddc":["610"],"file_date_updated":"2024-03-25T08:29:52Z","department":[{"_id":"PreCl"}],"_id":"15164","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"journal_article","article_type":"original","status":"public"},{"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"eissn":["2469-9934"],"issn":["2469-9926"]},"volume":109,"issue":"3","oa_version":"Preprint","abstract":[{"lang":"eng","text":"We perform a diagrammatic analysis of the energy of a mobile impurity immersed in a strongly interacting two-component Fermi gas to second order in the impurity-bath interaction. These corrections demonstrate divergent behavior in the limit of large impurity momentum. We show the fundamental processes responsible for these logarithmically divergent terms. We study the problem in the general case without any assumptions regarding the fermion-fermion interactions in the bath. We show that the divergent term can be summed up to all orders in the Fermi-Fermi interaction and that the resulting expression is equivalent to the one obtained in the few-body calculation. Finally, we provide a perturbative calculation to the second order in the Fermi-Fermi interaction, and we show the diagrams responsible for these terms."}],"intvolume":" 109","month":"03","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2311.14536","open_access":"1"}],"scopus_import":"1","date_updated":"2024-03-25T07:36:55Z","department":[{"_id":"MiLe"}],"_id":"15167","status":"public","type":"journal_article","article_type":"original","publication":"Physical Review A","day":"19","year":"2024","date_created":"2024-03-24T23:00:59Z","doi":"10.1103/PhysRevA.109.033315","date_published":"2024-03-19T00:00:00Z","acknowledgement":"We thank Félix Werner and Kris Van Houcke for interesting discussions.","oa":1,"quality_controlled":"1","publisher":"American Physical Society","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"chicago":"Al Hyder, Ragheed, F. Chevy, and X. Leyronas. “Exploring Beyond-Mean-Field Logarithmic Divergences in Fermi-Polaron Energy.” Physical Review A. American Physical Society, 2024. https://doi.org/10.1103/PhysRevA.109.033315.","ista":"Al Hyder R, Chevy F, Leyronas X. 2024. Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy. Physical Review A. 109(3), 033315.","mla":"Al Hyder, Ragheed, et al. “Exploring Beyond-Mean-Field Logarithmic Divergences in Fermi-Polaron Energy.” Physical Review A, vol. 109, no. 3, 033315, American Physical Society, 2024, doi:10.1103/PhysRevA.109.033315.","ieee":"R. Al Hyder, F. Chevy, and X. Leyronas, “Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy,” Physical Review A, vol. 109, no. 3. American Physical Society, 2024.","short":"R. Al Hyder, F. Chevy, X. Leyronas, Physical Review A 109 (2024).","apa":"Al Hyder, R., Chevy, F., & Leyronas, X. (2024). Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.109.033315","ama":"Al Hyder R, Chevy F, Leyronas X. Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy. Physical Review A. 2024;109(3). doi:10.1103/PhysRevA.109.033315"},"title":"Exploring beyond-mean-field logarithmic divergences in Fermi-polaron energy","external_id":{"arxiv":["2311.14536"]},"article_processing_charge":"No","author":[{"full_name":"Al Hyder, Ragheed","last_name":"Al Hyder","id":"d1c405be-ae15-11ed-8510-ccf53278162e","first_name":"Ragheed"},{"full_name":"Chevy, F.","last_name":"Chevy","first_name":"F."},{"first_name":"X.","last_name":"Leyronas","full_name":"Leyronas, X."}],"article_number":"033315"},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","citation":{"mla":"Campbell, Rutger, et al. “Decompositions into Two Linear Forests of Bounded Lengths.” Discrete Mathematics, vol. 347, no. 6, 113962, Elsevier, 2024, doi:10.1016/j.disc.2024.113962.","ama":"Campbell R, Hörsch F, Moore B. Decompositions into two linear forests of bounded lengths. Discrete Mathematics. 2024;347(6). doi:10.1016/j.disc.2024.113962","apa":"Campbell, R., Hörsch, F., & Moore, B. (2024). Decompositions into two linear forests of bounded lengths. Discrete Mathematics. Elsevier. https://doi.org/10.1016/j.disc.2024.113962","ieee":"R. Campbell, F. Hörsch, and B. Moore, “Decompositions into two linear forests of bounded lengths,” Discrete Mathematics, vol. 347, no. 6. Elsevier, 2024.","short":"R. Campbell, F. Hörsch, B. Moore, Discrete Mathematics 347 (2024).","chicago":"Campbell, Rutger, Florian Hörsch, and Benjamin Moore. “Decompositions into Two Linear Forests of Bounded Lengths.” Discrete Mathematics. Elsevier, 2024. https://doi.org/10.1016/j.disc.2024.113962.","ista":"Campbell R, Hörsch F, Moore B. 2024. Decompositions into two linear forests of bounded lengths. Discrete Mathematics. 347(6), 113962."},"title":"Decompositions into two linear forests of bounded lengths","article_processing_charge":"No","external_id":{"arxiv":["2301.11615"]},"author":[{"full_name":"Campbell, Rutger","last_name":"Campbell","first_name":"Rutger"},{"first_name":"Florian","last_name":"Hörsch","full_name":"Hörsch, Florian"},{"id":"6dc1a1be-bf1c-11ed-8d2b-d044840f49d6","first_name":"Benjamin","last_name":"Moore","full_name":"Moore, Benjamin"}],"article_number":"113962","publication":"Discrete Mathematics","day":"19","year":"2024","date_created":"2024-03-24T23:00:58Z","date_published":"2024-03-19T00:00:00Z","doi":"10.1016/j.disc.2024.113962","acknowledgement":"We wish to thank Dániel Marx and András Sebő for making us aware of the results in [8] and some clarifications on them.","oa":1,"quality_controlled":"1","publisher":"Elsevier","date_updated":"2024-03-25T08:09:43Z","department":[{"_id":"MaKw"}],"_id":"15163","status":"public","type":"journal_article","article_type":"original","language":[{"iso":"eng"}],"publication_status":"epub_ahead","publication_identifier":{"issn":["0012-365X"]},"volume":347,"issue":"6","oa_version":"Preprint","abstract":[{"text":"For some k∈Z≥0∪{∞}, we call a linear forest k-bounded if each of its components has at most k edges. We will say a (k,ℓ)-bounded linear forest decomposition of a graph G is a partition of E(G) into the edge sets of two linear forests Fk,Fℓ where Fk is k-bounded and Fℓ is ℓ-bounded. We show that the problem of deciding whether a given graph has such a decomposition is NP-complete if both k and ℓ are at least 2, NP-complete if k≥9 and ℓ=1, and is in P for (k,ℓ)=(2,1). Before this, the only known NP-complete cases were the (2,2) and (3,3) cases. Our hardness result answers a question of Bermond et al. from 1984. We also show that planar graphs of girth at least nine decompose into a linear forest and a matching, which in particular is stronger than 3-edge-colouring such graphs.","lang":"eng"}],"intvolume":" 347","month":"03","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2301.11615","open_access":"1"}],"scopus_import":"1"},{"acknowledgement":"We thank the anonymous referee for constructive comments that helped improve the manuscript. This work is based on observations made with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with program Nos. 1243 and 1895. The specific observations analyzed can be accessed via doi:10.17909/4xx0-zj76. Funded by the European Union (ERC, AGENTS, 101076224). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. R.P.N. acknowledges funding from JWST programs GO-1933 and GO-2279. Support for this work for R.P.N. was provided by NASA through the NASA Hubble Fellowship grant HST-HF2-51515.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. Support for this work for G.I. was provided by NASA through grant JWST-GO-01895 awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This work has received funding from the Swiss State Secretariat for Education, Research and Innovation (SERI) under contract No. MB22.00072, as well as from the Swiss National Science Foundation (SNSF) through project grant 200020_207349. The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant No. 140.\r\nFacility: JWST - James Webb Space Telescope, HST - Hubble Space Telescope satellite\r\nSoftware: Python, matplotlib (Hunter 2007), numpy (Harris et al. 2020), scipy (Virtanen et al. 2020), Astropy (Astropy Collaboration et al. 2013, 2018), Imfit (Erwin 2015).","publisher":"American Astronomical Society","quality_controlled":"1","oa":1,"has_accepted_license":"1","year":"2024","day":"07","publication":"The Astrophysical Journal","date_published":"2024-03-07T00:00:00Z","doi":"10.3847/1538-4357/ad2345","date_created":"2024-03-25T08:54:47Z","article_number":"129","project":[{"_id":"bd9b2118-d553-11ed-ba76-db24564edfea","name":"Young galaxies as tracers and agents of cosmic reionization","grant_number":"101076224"}],"citation":{"ista":"Matthee JJ, Naidu RP, Brammer G, Chisholm J, Eilers A-C, Goulding A, Greene J, Kashino D, Labbe I, Lilly SJ, Mackenzie R, Oesch PA, Weibel A, Wuyts S, Xiao M, Bordoloi R, Bouwens R, van Dokkum P, Illingworth G, Kramarenko I, Maseda MV, Mason C, Meyer RA, Nelson EJ, Reddy NA, Shivaei I, Simcoe RA, Yue M. 2024. Little Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys. The Astrophysical Journal. 963(2), 129.","chicago":"Matthee, Jorryt J, Rohan P. Naidu, Gabriel Brammer, John Chisholm, Anna-Christina Eilers, Andy Goulding, Jenny Greene, et al. “Little Red Dots: An Abundant Population of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys.” The Astrophysical Journal. American Astronomical Society, 2024. https://doi.org/10.3847/1538-4357/ad2345.","short":"J.J. Matthee, R.P. Naidu, G. Brammer, J. Chisholm, A.-C. Eilers, A. Goulding, J. Greene, D. Kashino, I. Labbe, S.J. Lilly, R. Mackenzie, P.A. Oesch, A. Weibel, S. Wuyts, M. Xiao, R. Bordoloi, R. Bouwens, P. van Dokkum, G. Illingworth, I. Kramarenko, M.V. Maseda, C. Mason, R.A. Meyer, E.J. Nelson, N.A. Reddy, I. Shivaei, R.A. Simcoe, M. Yue, The Astrophysical Journal 963 (2024).","ieee":"J. J. Matthee et al., “Little Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys,” The Astrophysical Journal, vol. 963, no. 2. American Astronomical Society, 2024.","ama":"Matthee JJ, Naidu RP, Brammer G, et al. Little Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys. The Astrophysical Journal. 2024;963(2). doi:10.3847/1538-4357/ad2345","apa":"Matthee, J. J., Naidu, R. P., Brammer, G., Chisholm, J., Eilers, A.-C., Goulding, A., … Yue, M. (2024). Little Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys. The Astrophysical Journal. American Astronomical Society. https://doi.org/10.3847/1538-4357/ad2345","mla":"Matthee, Jorryt J., et al. “Little Red Dots: An Abundant Population of Faint Active Galactic Nuclei at z ∼ 5 Revealed by the EIGER and FRESCO JWST Surveys.” The Astrophysical Journal, vol. 963, no. 2, 129, American Astronomical Society, 2024, doi:10.3847/1538-4357/ad2345."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"orcid":"0000-0003-2871-127X","full_name":"Matthee, Jorryt J","last_name":"Matthee","first_name":"Jorryt J","id":"7439a258-f3c0-11ec-9501-9df22fe06720"},{"first_name":"Rohan P.","full_name":"Naidu, Rohan P.","last_name":"Naidu"},{"full_name":"Brammer, Gabriel","last_name":"Brammer","first_name":"Gabriel"},{"first_name":"John","full_name":"Chisholm, John","last_name":"Chisholm"},{"last_name":"Eilers","full_name":"Eilers, Anna-Christina","first_name":"Anna-Christina"},{"last_name":"Goulding","full_name":"Goulding, Andy","first_name":"Andy"},{"full_name":"Greene, Jenny","last_name":"Greene","first_name":"Jenny"},{"first_name":"Daichi","full_name":"Kashino, Daichi","last_name":"Kashino"},{"first_name":"Ivo","full_name":"Labbe, Ivo","last_name":"Labbe"},{"last_name":"Lilly","full_name":"Lilly, Simon J.","first_name":"Simon J."},{"first_name":"Ruari","last_name":"Mackenzie","full_name":"Mackenzie, Ruari"},{"last_name":"Oesch","full_name":"Oesch, Pascal A.","first_name":"Pascal A."},{"full_name":"Weibel, Andrea","last_name":"Weibel","first_name":"Andrea"},{"full_name":"Wuyts, Stijn","last_name":"Wuyts","first_name":"Stijn"},{"full_name":"Xiao, Mengyuan","last_name":"Xiao","first_name":"Mengyuan"},{"first_name":"Rongmon","last_name":"Bordoloi","full_name":"Bordoloi, Rongmon"},{"full_name":"Bouwens, Rychard","last_name":"Bouwens","first_name":"Rychard"},{"first_name":"Pieter","full_name":"van Dokkum, Pieter","last_name":"van Dokkum"},{"full_name":"Illingworth, Garth","last_name":"Illingworth","first_name":"Garth"},{"first_name":"Ivan","full_name":"Kramarenko, Ivan","last_name":"Kramarenko"},{"first_name":"Michael V.","full_name":"Maseda, Michael V.","last_name":"Maseda"},{"last_name":"Mason","full_name":"Mason, Charlotte","first_name":"Charlotte"},{"first_name":"Romain A.","last_name":"Meyer","full_name":"Meyer, Romain A."},{"first_name":"Erica J.","full_name":"Nelson, Erica J.","last_name":"Nelson"},{"first_name":"Naveen A.","full_name":"Reddy, Naveen A.","last_name":"Reddy"},{"first_name":"Irene","full_name":"Shivaei, Irene","last_name":"Shivaei"},{"full_name":"Simcoe, Robert A.","last_name":"Simcoe","first_name":"Robert A."},{"first_name":"Minghao","last_name":"Yue","full_name":"Yue, Minghao"}],"article_processing_charge":"Yes","title":"Little Red Dots: An abundant population of faint active galactic nuclei at z ∼ 5 revealed by the EIGER and FRESCO JWST surveys","abstract":[{"lang":"eng","text":"Characterizing the prevalence and properties of faint active galactic nuclei (AGNs) in the early Universe is key for understanding the formation of supermassive black holes (SMBHs) and determining their role in cosmic reionization. We perform a spectroscopic search for broad Hα emitters at z ≈ 4–6 using deep JWST/NIRCam imaging and wide field slitless spectroscopy from the EIGER and FRESCO surveys. We identify 20 Hα lines at z = 4.2–5.5 that have broad components with line widths from ∼1200–3700 km s−1, contributing ∼30%–90% of the total line flux. We interpret these broad components as being powered by accretion onto SMBHs with implied masses ∼107–8M⊙. In the UV luminosity range MUV,AGN+host = −21 to −18, we measure number densities of ≈10−5 cMpc−3. This is an order of magnitude higher than expected from extrapolating quasar UV luminosity functions (LFs). Yet, such AGN are found in only <1% of star-forming galaxies at z ∼ 5. The number density discrepancy is much lower when compared to the broad Hα LF. The SMBH mass function agrees with large cosmological simulations. In two objects, we detect complex Hα profiles that we tentatively interpret as caused by absorption signatures from dense gas fueling SMBH growth and outflows. We may be witnessing early AGN feedback that will clear dust-free pathways through which more massive blue quasars are seen. We uncover a strong correlation between reddening and the fraction of total galaxy luminosity arising from faint AGN. This implies that early SMBH growth is highly obscured and that faint AGN are only minor contributors to cosmic reionization."}],"oa_version":"Published Version","scopus_import":"1","month":"03","intvolume":" 963","publication_identifier":{"issn":["0004-637X"],"eissn":["1538-4357"]},"publication_status":"published","file":[{"creator":"dernst","file_size":6047536,"date_updated":"2024-03-25T09:31:58Z","file_name":"2024_AstrophysicalJourn_Matthee.pdf","date_created":"2024-03-25T09:31:58Z","relation":"main_file","access_level":"open_access","content_type":"application/pdf","success":1,"file_id":"15184","checksum":"dc7af4694f9f94a551417ab49fa43edf"}],"language":[{"iso":"eng"}],"volume":963,"issue":"2","_id":"15180","article_type":"original","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","keyword":["Space and Planetary Science","Astronomy and Astrophysics"],"date_updated":"2024-03-25T09:37:27Z","ddc":["550"],"department":[{"_id":"JoMa"}],"file_date_updated":"2024-03-25T09:31:58Z"}]