Hsian-Yang Chen

activity

20162024

collaborators

3 papers

math.QA2024

Completely fixed point free isometry and cyclic orbifold of lattice vertex operator algebras

Hsian-Yang Chen, Ching Hung Lam

We continue our study of cyclic orbifolds of lattice vertex operator algebras and their full automorphism groups. We consider some special isometry $g \in O (L)$ such that $g^{i}$ is f…

math.QA2021

Fourvolutions and automorphism groups of orbifold lattice vertex operator algebras

Hsian-Yang Chen, Ching Hung Lam

Let $L$ be an even positive definite lattice with no roots, i.e., $L (2) = {x \in L ∣ (x ∣ x) = 2} = \emptyset$ . Let $g \in O (L)$ be an isometry of order $4$ such that $g^{2} = - 1$ on $L$ . In…

math.QA2016

$Z_{3}$ -orbifold construction of the Moonshine vertex operator algebra and some maximal $3$ -local subgroups of the Monster

Hsian-Yang Chen, Ching Hung Lam, Hiroki Shimakura

In this article, we describe some maximal $3$ -local subgroups of the Monster simple group using vertex operator algebras (VOA). We first study the holomorphic vertex operator algeb…

Completely fixed point free isometry and cyclic orbifold of lattice vertex operator algebras

Fourvolutions and automorphism groups of orbifold lattice vertex operator algebras

Z3​-orbifold construction of the Moonshine vertex operator algebra and some maximal 3-local subgroups of the Monster

$Z_{3}$ -orbifold construction of the Moonshine vertex operator algebra and some maximal $3$ -local subgroups of the Monster