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JCT
2011
74views more  JCT 2011»
13 years 6 months ago
Quasisymmetric Schur functions
Abstract. We introduce a new basis for quasisymmetric functions, which arise from a specialization of nonsymmetric Macdonald polynomials to standard bases, also known as Demazure a...
James Haglund, Kurt W. Luoto, Sarah Mason, Stephan...
JCT
2011
52views more  JCT 2011»
13 years 6 months ago
Laurent polynomials and Eulerian numbers
Daniel Erman, Gregory G. Smith, Anthony Vár...
JCT
2011
90views more  JCT 2011»
13 years 6 months ago
Extended Bressoud-Wei and Koike skew Schur function identities
Our recent paper [5] provides extensions to two classical determinantal results of Bressoud and Wei, and of Koike. The proofs in that paper were algebraic. The present paper conta...
A. M. Hamel, R. C. King
JCT
2011
55views more  JCT 2011»
13 years 6 months ago
A Pieri rule for skew shapes
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 ...
Sami H. Assaf, Peter R. W. McNamara
JCT
2011
67views more  JCT 2011»
13 years 6 months ago
A curious q-analogue of Hermite polynomials
Two well-known q-Hermite polynomials are the continuous and discrete q-Hermite polynomials. In this paper we consider a new family of q-Hermite polynomials and prove several curiou...
Johann Cigler, Jiang Zeng
JCT
2011
108views more  JCT 2011»
13 years 6 months ago
The number of extreme points of tropical polyhedra
The celebrated upper bound theorem of McMullen determines the maximal number of extreme points of a polyhedron in terms of its dimension and the number of constraints which define...
Xavier Allamigeon, Stéphane Gaubert, Ricard...