Thomas Lam ; Aaron Lauve ; Frank Sottile
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Skew Littlewood―Richardson rules from Hopf algebras
dmtcs:2853 -
Discrete Mathematics & Theoretical Computer Science,
January 1, 2010,
DMTCS Proceedings vol. AN, 22nd International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2010)
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https://doi.org/10.46298/dmtcs.2853
Skew Littlewood―Richardson rules from Hopf algebrasArticle
Authors: Thomas Lam 1; Aaron Lauve 2; Frank Sottile 2
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Thomas Lam;Aaron Lauve;Frank Sottile
1 Department of Mathematics - University of Michigan
2 Department of Mathematics [Austin]
We use Hopf algebras to prove a version of the Littlewood―Richardson rule for skew Schur functions, which implies a conjecture of Assaf and McNamara. We also establish skew Littlewood―Richardson rules for Schur $P-$ and $Q-$functions and noncommutative ribbon Schur functions, as well as skew Pieri rules for k-Schur functions, dual k-Schur functions, and for the homology of the affine Grassmannian of the symplectic group.