Examples for the standard conjecture of Hodge type
Abstract
For each prime number and each integer , we construct infinitely many abelian varieties of dimension over satisfying the standard conjecture of Hodge type. The main tool is a recent theorem of Ancona on certain rank motives. These varieties are constructed explicitly through Honda-Tate theory. Moreover, they have Tate classes that are not generated by divisors nor liftable to characteristic zero. Also, we prove a result towards a classification of simple abelian varieties for which the result of Ancona can be applied to. Along the way, we prove results of independent interest about Honda-Tate theory and about multiplicative relations between algebraic integers.
Cite
@article{arxiv.2401.17445,
title = {Examples for the standard conjecture of Hodge type},
author = {Thomas Agugliaro},
journal= {arXiv preprint arXiv:2401.17445},
year = {2025}
}
Comments
revised version, accepted in Documenta Mathematica; 38 pages. Comments welcome!