2 citations · 2 across the 10 of their papers we have counts for
22 papers
A recurrence relation for characters of highest weight integrable modules for affine Lie algebras
William J. Cook, Haisheng Li, Kailash C. Misra
Using certain results for the vertex operator algebras associated with affine Lie algebras we obtain recurrence relations for the characters of integrable highest weight irreducibl…
Twisted modules for vertex algebras associated with vertex algebroids
Haisheng Li, Gaywalee Yamskulna
We continue with [LY] to construct and classify graded simple twisted modules for the -graded vertex algebras constructed by Gorbounov, Malikov and Schechtman from vertex algeb…
Pseudoderivations, pseudoautomorphisms and simple current modules for vertex algebras
Haisheng Li
We exhibit a connection between Etingof-Kazhdan's notion of pseudoderivation and a certain construction of simple current modules for a vertex operator algebra and meanwhile we int…
Nonlocal vertex algebras generated by formal vertex operators
Haisheng Li
This is the first paper in a series to study vertex algebra-like objects arising from infinite-dimensional quantum groups (quantum affine algebras and Yangians). In this paper we l…
On certain vertex algebras and their modules associated with vertex algebroids
Haisheng Li, Gaywalee Yamskulna
We study the family of vertex algebras associated with vertex algebroids, constructed by Gorbounov, Malikov, and Schechtman. As the main result, we classify all the (graded) simple…
On the concepts of intertwining operator and tensor product module in vertex operator algebra theory
Yi-Zhi Huang, James Lepowsky, Haisheng Li +1
We produce counterexamples to show that in the definition of the notion of intertwining operator for modules for a vertex operator algebra, the commutator formula cannot in general…