Matthew J. Willis
Published 2011-10-27Version 1
The right and left key of a semistandard Young tableau were introduced by Lascoux and Schutzenberger in 1990. Most prominently, the right key is a tool used to find Demazure characters for sl(n,C). Previous methods used to compute these keys require introducing other types of combinatorial objects. This paper gives methods to obtain the right and left keys by inspection of the semistandard Young tableau.
Comments: 8 pages, 1 figure. Virtually identical to the version submitted in July 2011. To be contained in the author's doctoral thesis written under the supervision of Robert A. Proctor
Semistandard Tableaux for Demazure Characters (Key Polynomials) and Their Atoms
Ehrhart positivity and Demazure characters
Some instances of Homomesy in product of two chains
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