Prof. Dmitri Akhiezer (Institute for Information Transmission
Problems, Mosca)
"Weakly symmetric spaces and spherical varieties"
Programma:
1) Commutative homogeneous spaces and Gelfand pairs.
2) Spherical varieties over C, multiplicity free actions and
spherical affine homogenous spaces.
3) The Weyl involution of a complex reductive group.
4) Selberg's question. Therorem: any commutative homogeneous space of
a (real) reductive group is weakly symmetric.
5) Spherical Stein manifolds and the Weyl involution.