Combinatorics for graded Cartan matrices of the Iwahori-Hecke algebra of type A
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cartanalgebracombinatoricsgradediwahori-heckematrixtypeanalogue
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A $q$-analogue of combinatorics concerning the Cartan matrix for the Iwahori-Hecke algebra of type $A$ is investigated. We give several descriptions for the determinant of the graded Cartan matrix, which imply some combinatorial identities. A conjectural expression for the elementary divisors is also presented.
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