Notes on exotic and perverse-coherent sheaves
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sheavesexoticperverse-coherentapplicationsarticlebundlecalculationscategories
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Exotic sheaves are certain complexes of coherent sheaves on the cotangent bundle of the flag variety of a reductive group. They are closely related to perverse-coherent sheaves on the nilpotent cone. This expository article includes the definitions of these two categories, applications, and some structure theory, as well as detailed calculations for SL(2).
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