Numerical action for endomorphisms
Dynamical Systems
2025-02-10 v1 Algebraic Geometry
Abstract
Let be a surjective endomorphism of a projective variety of dimension . The aim of this paper is to study the action of on the numerical group of divisors. For exmaple, I proved that is cohomologically hyperbolic if and only if it is quasi-amplified; and it is amplified if and only if every subsystem of is cohomologically hyperbolic. For the proofs, I introduced a notion of spectrum in linear algebra for an open and saliant invariant cone. I also introduce a notion of generated (positive) cycles as an algebraic analogy of (positive) closed current.
Cite
@article{arxiv.2502.04779,
title = {Numerical action for endomorphisms},
author = {Junyi Xie},
journal= {arXiv preprint arXiv:2502.04779},
year = {2025}
}
Comments
35 pages