Normal functions for algebraically trivial cycles are algebraic for arithmetic reasons
Algebraic Geometry
2019-10-17 v2
Abstract
For families of smooth complex projective varieties we show that normal functions arising from algebraically trivial cycle classes are algebraic, and defined over the field of definition of the family. In particular, the zero loci of those functions are algebraic and defined over such a field of definition. This proves a conjecture of Charles.
Cite
@article{arxiv.1810.07404,
title = {Normal functions for algebraically trivial cycles are algebraic for arithmetic reasons},
author = {Jeff Achter and Sebastian Casalaina-Martin and Charles Vial},
journal= {arXiv preprint arXiv:1810.07404},
year = {2019}
}
Comments
New title. 15 pages