Seminário Análise Funcional e Aplicações 

06/06/2014, 14:30 — 15:30 — Sala P3.10, Pavilhão de Matemática
Pedro A. Santos, CEAF - Instituto Superior Técnico

Approximations of convolutions with almost periodic or quasi-continuous symbol

We study the stability and Fredholm property of the finite sections of  convolution type operators with semi-almost periodic and quasicontinuous  symbols, and operators of multiplication by slowly oscillating, almost periodic or even more general coefficients. This is done by introducing and exploring the notions of Rich sequences and Quasi-Banded operators.