"Invariant
subspaces for Banach space operators and Reflexivity"

By

**Onur Yavuz**

**(ODTU) **

** **

Abstract: I
will first talk about an invariant subspace result by Ambrozie and Muller for
Banach space operators whose spectrum contains the unit circle. Then I will
describe briefly how this result can be extended to operators with a multiply
connected spectrum. If time permits, I will discuss the corresponding
reflexivity problem.

Tea and cookies will be served before the
seminar.

**Date: ****Tuesday,
November 27, 2007**

**Time: ****16.10**

**Place: ****Mathematics Seminar Room, SA-141**