2023 Zygmund-Calderón Lectures: Approximate Cohomology

3:30–4:30 pm Eckhart Hall, Room 206

Approximate Cohomology

The second talk will describe application of ideas from dynamics and additive combinatorics to a question about approximate homomorphisms. Say that a function f from an abelian group G to Hom(V,W) is an approximate homomorphism if f(x+y)-f(x)-f(y) is of bounded rank uniformly for all x,y in G. Is there a homomorphism h such that (f-h)(x) is of bounded rank for all x in G ? 

Event Type


Apr 25