Graded decomposition matrices of v-Schur algebras via Jantzen filtration
classification
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algebrasdecompositionfiltrationgradedjantzenmatricesv-schurcalculate
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We prove that certain parabolic Kazhdan-Lusztig polynomials calculate the graded decomposition matrices of v-Schur algebras given by the Jantzen filtration of Weyl modules, confirming a conjecture of Leclerc and Thibon.
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