Descent Monomials, P-Partitions and Dense Garsia-Haiman Modules

  • Authors:
  • Edward E. Allen

  • Affiliations:
  • Department of Mathematics, Wake Forest University, Winston-Salem, NC 27109, USA. allene@wfu.edu

  • Venue:
  • Journal of Algebraic Combinatorics: An International Journal
  • Year:
  • 2004

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Abstract

A two-variable analogue of the descents monomials is defined and is shown to form a basis for the dense Garsia-Haiman modules. A two-variable generalization of a decomposition of a P-partition is shown to give the algorithm for the expansion into this descent basis. Some examples of dense Garsia-Haiman modules include the coinvariant rings associated with certain complex reflection groups.