The bijection between exceptional subcategories and non-crossing partitions
classification
🧮 math.RT
keywords
bijectionexceptionalgroupsnon-crossingpartitionssubcategoriesweylalgebras
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This note discusses the bijection between the exceptional subcategories of representations of quivers and generalized non-crossing partitions of Weyl groups. We give a new proof of the Ingalls-Thomas-Igusa-Schiffler bijection by using the exchange property of the Weyl groups of the Kac-Moody Lie algebras.
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