"Comparison of operator valued completely

positive maps on C*-algebras"




Aurelian Gheondea

(Bilkent University)


Abstract: Operator valued completely positive maps on C*-algebra are nonncommutative generalizations of positive Borel measures on compact spaces. There are natural partial order or preorder relations for these maps as well as notions of absolute continuity and mutual singularity. The main topics refer to Radon-Nikodym derivatives and Lebesgue type decompositions for completely positive maps.


Tea and cookies will be served before the seminar.



Date:  Tuesday, November 13, 2007

Time: 15.40

Place: Mathematics Seminar Room, SA-141