Chao Yang

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math.QA2026

Finiteness and Construction of Internal Hom for Vertex Operator Algebras

Chao Yang, Yiyi Zhu

Let $V$ be a vertex operator algebra, and let $W^{1}$ and $W^{2}$ be restricted $V$ -modules. We construct a generalized $V$ -module $H (W^{1}, W^{2})$ characterized by canonical un…

math.QA2023

Hopf actions on vertex algebras

Chongying Dong, Li Ren, Chao Yang

In this article, we investigate Hopf actions on vertex algebras. Our first main result is that every finite-dimensional Hopf algebra that inner faithfully acts on a given π_2-injec…

math.QA2023★ 1 cited

Orbifold theory for vertex algebras and Galois correspondence

Chongying Dong, Li Ren, Chao Yang

Let $V$ be a simple vertex algebra of countable dimension, $G$ be a finite automorphism group of $V$ and $σ$ be a central element of $G$ . Assume that $S$ is a finite set of…