## Discrete Math Seminar: A notion of transpose for compositions

• Date: 04/13/2010
Lecturer(s):
Sarah Mason (UCSD/Wakeforest)
Location:

University of British Columbia

Description:

The omega transformation takes a Schur function indexed by a partition to the Schur function indexed by the partition's transpose. In this joint work with Jeff Remmel, we explore a refinement of the omega transformation defined on the quasisymmetric Schur functions. The resulting polynomials are called row-strict quasisymmetric Schur functions since they are described combinatorially as generating functions for row-strict composition tableaux. The interaction between row-strict quasisymmetric Schur functions and quasisymmetric Schur functions provides a natural method for interpolating between the compositions that rearrange a given partition and those that rearrange the partition's transpose. This allows us to define an operation on compositions which is similar to the transposition operation on partitions.

Schedule:

4:00 - 5:00pm, WMAX 216.