A now classical method to construct the Schur functions is constructing matrix el- ements using half vertex operators associated to the classical boson-fermion cor- respondence. This construction is known as using free fermions. Schur functions are also known to be polynomial representatives of cohomology classes of Schu- bert varieties in the Grassmannian. By instead using K-theory, the representatives become the (symmetric) Grothendieck polynomials. A recent generalization was given by Hwang et al. called the (refined) canonical Grothendieck polynomials based on the work of Galashin–Grinberg–Liu and Yeliussizov. In this talk, we take the Jacobi–Trudi formulas of Hwang et al. as our definition and use Wick’s theorem to give a presentation for the canonical Grothendieck polynomials and their dual basis using free fermions. This generalizing the recent work of Iwao. Using this, we derive many known identities, as well as some new ones, through simple computations. This is based on joint work with Shinsuke Iwao and Kohei Motegi (arXiv: 2211.05002).
De Paul-André Melliès
De Paul-André Melliès
De Cyril Banderier
De Sergey Yurkevich
De Karol Penson
De Frédéric Patras
De Darij Grinberg
De Travis Scrimshaw
De Arthemy Kiselev
De Béa de Laporte
De Viviane Pons
De Gérard Ben Arous
De Viviane Pons
De Wenjie Fang
De Céline Duval
De Olivier Benoist
