We introduce and study the concept of （weak） pseudotwistor for a nonlocal vertex algebra, as a generalization of the notion of twistor. We give the relations between pseudotwistors and twisting operators. Furthermor...We introduce and study the concept of （weak） pseudotwistor for a nonlocal vertex algebra, as a generalization of the notion of twistor. We give the relations between pseudotwistors and twisting operators. Furthermore, we study the inverse of an invertible weak pseudotwistor and the composition of two weak pseudotwistors.展开更多
基金This work was supported in part by the National Natural Science Foundation of China （Grant Nos. 11201285, 11371238） and a grant of the First-class Discipline of Universities in Shanghai.
文摘We introduce and study the concept of （weak） pseudotwistor for a nonlocal vertex algebra, as a generalization of the notion of twistor. We give the relations between pseudotwistors and twisting operators. Furthermore, we study the inverse of an invertible weak pseudotwistor and the composition of two weak pseudotwistors.
