Sami H. Assaf ; Peter R. W. McNamara
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A Pieri rule for skew shapes
dmtcs:2886 -
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.2886
A Pieri rule for skew shapesArticle
Authors: Sami H. Assaf 1; Peter R. W. McNamara
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Sami H. Assaf;Peter R. W. McNamara
1 Department of Mathematics [MIT]
The Pieri rule expresses the product of a Schur function and a single row Schur function in terms of Schur functions. We extend the classical Pieri rule by expressing the product of a skew Schur function and a single row Schur function in terms of skew Schur functions. Like the classical rule, our rule involves simple additions of boxes to the original skew shape. Our proof is purely combinatorial and extends the combinatorial proof of the classical case.