11/12/2009, 15:00 — 16:00 — Room P3.10, Mathematics Building
Cristina Câmara, Instituto Superior Técnico, Universidade Técnica de Lisboa
On some properties of the kernel and the cokernel of a Toeplitz
operator
The dimensions of the kernels of two Toeplitz operators whose
symbols satisfy certain relations are compared using simple linear
algebraic arguments. The results are applied to obtain some
Fredholm type properties for \(2\times 2\) symbols whose
determinant admits a bounded factorization.