Time and place: 9/30 at Science Center (1 Oxford Street), room 507.
Speaker: Bowen Yang.
Title: Bounded L theory
Abstract: Bounded L-groups arise in the intersection of algebraic L-theory and large-scale geometry, providing a framework for quadratic forms and automorphisms subject to uniform control conditions. These groups play a role in topology and surgery theory, especially in contexts where one needs to measure obstructions not just algebraically but also geometrically, with bounds on propagation or support. In this talk I will give a gentle introduction to the basic definitions, explain how bounded L-groups differ from classical L-groups, and outline an application to quantum many body invariants.