2 research outputs found
A multiparametric Murnaghan-Nakayama rule for Macdonald polynomials
We introduce a new family of operators as multi-parameter deformation of the
one-row Macdonald polynomials. The matrix coefficients of these operators
acting on the space of symmetric functions with rational coefficients in two
parameters (denoted by ) are computed by assigning some
values to skew Macdonald polynomials in -ring notation. The new rule
is utilized to provide new iterative formulas and also recover various existing
formulas in a unified manner. Specifically the following applications are
discussed: (i) A -Murnaghan-Nakayama rule for Macdonald functions is
given as a generalization of the -Murnaghan-Nakayama rule; (ii) An iterative
formula for the -Green polynomial is deduced; (iii) A simple proof of
the Murnaghan-Nakayama rule for the Hecke algebra and the Hecke-Clifford
algebra is offered; (iv) A combinatorial inversion of the Pieri rule for
Hall-Littlewood functions is derived with the help of the vertex operator
realization of the Hall-Littlewood functions; (v) Two iterative formulae for
the -Kostka polynomials are obtained from the dual
version of our multiparametric Murnaghan-Nakayama rule, one of which yields an
explicit formula for arbitrary and in terms of the generalized
-binomial coefficient introduced independently by Lassalle and
Okounkov.Comment: 32 pp, 2 figure
Combinatorial Representation Theory
We attempt to survey the field of combinatorial representation theory,
describe the main results and main questions and give an update of its current
status. We give a personal viewpoint on the field, while remaining aware that
there is much important and beautiful work that we have not been able to
mention