De-Qi Zhang

activity

20232026

collaborators

Showing 2025Show all

2 papers · 1 filter

math.AG2025

Essential dimensions of polarized endomorphisms of abelian varieties

Yujie Luo, Keiji Oguiso, De-Qi Zhang

Let $f$ be a polarized endomorphism of an abelian variety $A$ . Kollár and Zhuang asked whether the essential dimension $ed (f)$ equals $dim (A)$ . We provide counter…

math.AG2025

Log Calabi-Yau structure of algebaic varieties admitting a polarized endomorphism

Wentao Chang, De-Qi Zhang

Let $X$ be a normal projective variety admitting a polarized endomorphism $f$ , i.e., $f^{*} H \sim q H$ for some ample divisor $H$ and integer $q > 1$ . Then Broustet and Gongyo proposed t…