Speaker: Jinwei Yang, Notre Dame University

Time: Friday, July 17, 2015 from 10:00 to 11:00 am

Place: Room 78201

Abstract: In this talk, I will introduce strongly C_1-cofiniteness condition for modules of strongly graded vertex algebras with respect to an abelian group. Under strongly C_1-cofiniteness condition, I will derive system of differential equations for matrix elements of products and iterates of logarithmic intertwining operators . Then the convergence and extension properties needed in the logarithmic tensor category for such strongly graded modules will be verified.