Room 723, The 3rd General Building, NTHU
(清華大學綜合三館 723室)
Some preliminaries on permutations
Chi Kwong Fok (NCTS)
To set the scene for introducing Schubert polynomial, I will talk about some notions and combinatorial gadgets associated with permutations, including Bruhat order, Rothe diagram, Lehmer code, vexillary and 321-avoiding permutations.