Resumen de Compact formulas for Macdonald polynomials and quasisymmetric Macdonald polynomials

Sylvie Corteel, Jim Haglund, Olya Mandelshtam, Sarah Mason, Lauren Williams

• We present several new and compact formulas for the modified and integral form of the Macdonald polynomials, building on the compact “multiline queue” formula for Macdonald polynomials due to Corteel, Mandelshtam, and Williams. We also introduce a new quasisymmetric analogue of Macdonald polynomials. These “quasisymmetric Macdonald polynomials" refine the (symmetric) Macdonald polynomials and specialize to the quasisymmetric Schur polynomials defined by Haglund, Luoto, Mason, and van Willigenburg.