We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Polarizations of Abelian Varieties Over Finite Fields via Canonical Liftings.
- Authors
Bergström, Jonas; Karemaker, Valentijn; Marseglia, Stefano
- Abstract
We describe all polarizations for all abelian varieties over a finite field in a fixed isogeny class corresponding to a squarefree Weil polynomial, when one variety in the isogeny class admits a canonical lifting to characteristic zero, that is, a lifting for which the reduction morphism induces an isomorphism of endomorphism rings. Categorical equivalences between abelian varieties over finite fields and fractional ideals in étale algebras enable us to explicitly compute isomorphism classes of polarized abelian varieties satisfying some mild conditions. We also implement algorithms to perform these computations.
- Subjects
ABELIAN varieties; FINITE fields; IDEALS (Algebra); ISOMORPHISM (Mathematics); ENDOMORPHISMS; ENDOMORPHISM rings; POLYNOMIALS
- Publication
IMRN: International Mathematics Research Notices, 2023, Vol 2023, Issue 4, p3194
- ISSN
1073-7928
- Publication type
Article
- DOI
10.1093/imrn/rnab333