The MacNeille Completion of the Type B Bruhat Poset

Explore the MacNeille completion of Weyl groups in classical types with Bruhat order in this 50-minute lecture presented by Paul Zinn-Justin from the University of Melbourne. Delve into the connection between Alternating Sign Matrices and Weyl groups, and discover a new explicit description of the MacNeille completion in type B. Recorded at IPAM's Integrability and Algebraic Combinatorics Workshop, this talk builds upon the work of Lascoux and Schutzenberger, offering insights into advanced topics in algebraic combinatorics and group theory.

Paul Zinn Justin - The MacNeille completion of the type B Bruhat poset - IPAM at UCLA