研究了顶点算子代数的模范畴,得到了顶点算子代数的模范畴的Grothendick群及其一些性质,这也为研究顶点算子代数和共形场论提供了一个重要的工具.
In this paper,we study the category of modules for a vertex operator algebra.We obtain the Grothendieck group of the category of modules for a vertex operator algebra and some properties,which provides a tool to study the vertex algebra theory and conformal field theory.