Prelegent: WOJCIECH SZYMAŃSKI

We discuss the problem of conjugacy of MASAs in (purely infinite) graph C*-algebras. The main question we are interested in is inner versus outer conjugacy. To attack this problem, we employ a certain technique motivated by von Neumann algebra considerations. We illustrate it with some technically non-trivial examples. This talk is based on a joint work with Tomohiro Hayashi and Jeong Hee Hong.