We compute the Hochschild cohomology of any block of *q*-Schur algebras. We focus the even part of this Hochschild cohomology ring. To compute the Hochschild cohomology of *q*-Schur algebras, we prove the following two results: first, we construct two graded algebra surjections between the Hochschild cohomologies of quasi-hereditary algebras because... Show more

April 26, 2016

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Hochschild cohomology of $q$-Schur algebras

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