New combinatorial formulas, via bumpless pipe dreams and pipe dreams, express Grothendieck polynomials in the Schubert basis and Schubert polynomials in the Grothendieck basis, and extend to the back stable setting.
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Changing Bases with Pipe Dream Combinatorics
New combinatorial formulas, via bumpless pipe dreams and pipe dreams, express Grothendieck polynomials in the Schubert basis and Schubert polynomials in the Grothendieck basis, and extend to the back stable setting.