--- res: bibo_abstract: - We find an asymptotic formula for the number of primitive vectors $(z_1,\ldots,z_4)\in (\mathbb{Z}_{\neq 0})^4$ such that $z_1,\ldots, z_4$ are all squareful and bounded by $B$, and $z_1+\cdots + z_4 = 0$. Our result agrees in the power of $B$ and $\log B$ with the Campana-Manin conjecture of Pieropan, Smeets, Tanimoto and V\'{a}rilly-Alvarado.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Alec L foaf_name: Shute, Alec L foaf_surname: Shute foaf_workInfoHomepage: http://www.librecat.org/personId=440EB050-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-1812-2810 bibo_doi: 10.48550/arXiv.2104.06966 dct_date: 2021^xs_gYear dct_language: eng dct_title: Sums of four squareful numbers@ ...