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Dual Schubert polynomials and Postnikov-Stanley polynomials (Combinatorics Seminar)
Yuchong Zhang, University of Michigan
Dual Schubert polynomials and their skew generalization, Postnikov-Stanley polynomials, possess deep geometric and algebraic properties....
Fibers of maps to totally nonnegative spaces (Combinatorics Seminar)
Patricia Hersh, University of Oregon
Fomin-Shapiro, Lusztig, Galashin-Karp-Lam and several others have studied the images of certain maps to totally nonnegative spaces whose...
Higher-Categorical Associahedra (Combinatorics Seminar)
Spencer Backman (University of Vermont)
In 2017, Bottman introduced a family of posets called 2-associahedra as a tool for investigating functoriality properties of Fukaya...