Polarized endomorphisms of log Calabi-Yau pairs
Algebraic Geometry
2025-08-20 v2
Abstract
Let be a dlt log Calabi-Yau pair admitting a polarized endomorphism. We show that is a finite quotient of a toric log Calabi-Yau fibration over an abelian variety. We provide an example which shows that the previous statement does not hold if we drop the dlt condition of even if is a smooth variety. Given a klt type variety and a log Calabi-Yau pair admitting a polarized endomorphism, we show that a suitable birational modification of is a finite quotient of a toric log Calabi-Yau fibration over an abelian variety.
Keywords
Cite
@article{arxiv.2406.18092,
title = {Polarized endomorphisms of log Calabi-Yau pairs},
author = {Joaquín Moraga and José Ignacio Yáñez and Wern Yeong},
journal= {arXiv preprint arXiv:2406.18092},
year = {2025}
}
Comments
26 pages. v2: added result regarding lifting surjective endomorphisms to small $\mathbb{Q}$-factorializations