Ordinary abelian varieties: isogeny graphs and polarizations
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866908795740880896 |
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| author | Costa, Edgar Dupuy, Taylor Marseglia, Stefano Roe, David Vincent, Christelle |
| author_facet | Costa, Edgar Dupuy, Taylor Marseglia, Stefano Roe, David Vincent, Christelle |
| contents | Given an integer $D$ and an ordinary isogeny class of abelian varieties defined over a finite field $\mathbb{F}_q$ with commutative $\mathbb{F}_q$-endomorphism algebra, we provide algorithms for computing all isogenies of degree dividing $D$ and polarizations of degree dividing $D$. We discuss phenomena that arise for higher dimension abelian varieties but not elliptic curves, bounds on the diameter of the graph of minimal isogenies, and decompositions of isogeny graphs into orbits for the Picard group of the Frobenius order. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_20979 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Ordinary abelian varieties: isogeny graphs and polarizations Costa, Edgar Dupuy, Taylor Marseglia, Stefano Roe, David Vincent, Christelle Number Theory 11G10, 11G25, 11Y40, 14K02, 14K15, 14K22 Given an integer $D$ and an ordinary isogeny class of abelian varieties defined over a finite field $\mathbb{F}_q$ with commutative $\mathbb{F}_q$-endomorphism algebra, we provide algorithms for computing all isogenies of degree dividing $D$ and polarizations of degree dividing $D$. We discuss phenomena that arise for higher dimension abelian varieties but not elliptic curves, bounds on the diameter of the graph of minimal isogenies, and decompositions of isogeny graphs into orbits for the Picard group of the Frobenius order. |
| title | Ordinary abelian varieties: isogeny graphs and polarizations |
| topic | Number Theory 11G10, 11G25, 11Y40, 14K02, 14K15, 14K22 |
| url | https://arxiv.org/abs/2601.20979 |