Algebraic and o-minimal flows beyond the cocompact case
Algebraic Geometry
2022-09-23 v1 Logic
Abstract
Let be an algebraic variety, and let be a discrete subgroup whose real and complex spans agree. We describe the topological closure of the image of in , thereby extending a result of Peterzil-Starchenko in the case when is cocompact. We also obtain a similar extension when is definable in an o-minimal structure with no restrictions on , and as an application prove the following conjecture of Gallinaro: for a closed semi-algebraic (such as a complex algebraic variety) and the coordinate-wise exponential map, we have where are positive-dimensional compact real tori and are semi-algebraic.
Cite
@article{arxiv.2209.10812,
title = {Algebraic and o-minimal flows beyond the cocompact case},
author = {Spencer Dembner and Hunter Spink},
journal= {arXiv preprint arXiv:2209.10812},
year = {2022}
}
Comments
8 pages, comments welcome!