A Duality among Verma Modules
The tilting equivalence for a certain class of ℤ-graded Lie algebras is explained. In particular, for the Virasoro algebra, this explains the structural duality between Verma modules with highest weights (c,h) and (26−c,1−h) which can be observed by analyzing Verma modules. This chapter can be read independently of other chapters.
KeywordsExact Sequence Short Exact Sequence Natural Transformation Full Subcategory Abelian Category
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