On the Rank of Abelian Varieties Over Ample Fields
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
A field K is called ample if every smooth K-curve that has a K-rational point has infinitely many of them. We prove two theorems to support the following conjecture, which is inspired by classical infinite rank results: Every non-zero Abelian variety A over an ample field K which is not algebraic over a finite field has infinite rank. First, the Z((p))-module A(K) circle times Z((p)) is not finitely generated, where p is the characteristic of K. In particular, the conjecture holds for fields of characteristic zero. Second, if K is an infinite finitely generated field and S is a finite set of local primes of K, then every Abelian variety over K acquires infinite rank over certain subfields of the maximal totally S-adic Galois extension of K. This strengthens a recent infinite rank result of Geyer and Jarden.
Details
| Original language | English |
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| Pages (from-to) | 579-586 |
| Number of pages | 8 |
| Journal | International journal of number theory |
| Volume | 6 |
| Issue number | 3 |
| Publication status | Published - May 2010 |
| Peer-reviewed | Yes |
| Externally published | Yes |
External IDs
| Scopus | 77952871914 |
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Keywords
Keywords
- Abelian variety, Ample field, Infinite rank