A geometric approach to Hall algebras

1 November 2016
15:45
Adam Gal
Abstract

The Hall algebra can be constructed using the Waldhausen S-construction. We will give a systematic recipe for this and show how it extends naturally to give a bi-algebraic structure. As a result we obtain a more transparent proof of Green's theorem about the bi-algebra structure on the Hall algebra.

  • Algebraic and Symplectic Geometry Seminar