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Logarithmic tensor category theory, VII: Convergence and extension properties and applications to expansion for intertwining maps (1110.1929v2)
Published 10 Oct 2011 in math.QA, hep-th, and math.RT
Abstract: This is the seventh part in a series of papers in which we introduce and develop a natural, general tensor category theory for suitable module categories for a vertex (operator) algebra. In this paper (Part VII), we give sufficient conditions for the existence of the associativity isomorphisms.