Yuhei Suzuki from Nagoya University will give a talk on "Complete descriptions of intermediate operator algebras by intermediate extensions of dynamical systems".
Abstract: I will give a new complete description theorem of crossed product inclusions arising from factor maps. Both continuous(C*) and measurable(W*) cases are discussed.
Applications to maximality amenability problem and lattice realization theorem, some of them interestingly involves the Margulis factor theorem, are also given. Based on arXiv:1805.02077.