A Schur-like basis of the noncommutative symmetric functions is one whose commutative image is the Schur basis of the symmetric functions. The canonical Schur-like bases of NSym are the immaculate basis, the shin basis, and the Young noncommutative Schur basis, each of which reflects the properties of the Schur functions in interesting and surprisingly different ways. For each of these bases, we will discuss tableaux interpretations, various types of multiplication rules, and dual bases in the quasisymmetric functions. We will then present new results on the shin functions relating to creation operators and Jacobi-Trudi rules, along with progress on their multiplicative structure.
CAGE: Philadelphia Area Combinatorics and Alg. Geometry Seminar
Thursday, September 21, 2023 - 3:30pm
Spencer Daugherty
NCSU
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Generic Mean Curvature Flow with Cylindrical Singularities
Geometry-Topology Seminar
3:30pm