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math.AG2026

Totally invariant subvarieties of

Yujie Luo, Sheng Meng

Let be an endomorphism of degree greater than one. We prove that every irreducible Zariski closed subset with $f^{-1}(V)=V…

math.AG2026

Varieties Admitting Polarized Galois Endomorphisms

Zhiyuan Jiang, Yujie Luo

Let be an -dimensional smooth complex projective variety admitting an int-amplified Galois endomorphism. We prove that its maximal rationally connected fibration is represen…

math.AG2026

Sharp Bounds for Totally Invariant Cycles of Projective Varieties

Wentao Chang, Yujie Luo

Let be a smooth projective variety, an int-amplified endomorphism, and any ample line bundle on . We prove that, in every codimension, the total degree of pri…

math.AG2026

Log Calabi--Yau structure for endomorphisms on

Yujie Luo, Sheng Meng

Let be a -polarized endomorphism, where , and let be its ramification divisor. We study the singularities of the ramification pair $(\…

math.AG2026

Galois self-covers of projective spaces and essential dimensions

Yujie Luo, De-Qi Zhang

We give the structure theorem of Galois self-covers . As an application, we show that the essential dimension of every such nontrivial cover attai…

math.AG2026

Essential dimensions of polarized endomorphisms of certain algebraic surfaces

Qianli Fang, Yujie Luo, De-Qi Zhang

Let be a polarized endomorphism of a smooth projective surface which is birationally ruled. We answer a question of Kollár and Zhuang, in the affirmative, on the incom…

math.AG2025

Essential dimensions of polarized endomorphisms of abelian varieties

Yujie Luo, Keiji Oguiso, De-Qi Zhang

Let be a polarized endomorphism of an abelian variety . Kollár and Zhuang asked whether the essential dimension equals . We provide counter…

math.AG2025

Jordan property for automorphism groups of compact varieties

Yujie Luo, Sheng Meng, De-Qi Zhang

In this note, we report some recent progress on the Jordan property for (birational) automorphism groups of projective varieties and compact complex varieties.