UK Virtual Operator Algebras Seminar: John Roe and Coarse Geometry
Nigel Higson (Pennsylvania State University)
Thursday 2nd July, 2020 16:00-17:30 Contact Mike.Whittaker@glasgow.ac.uk for Zoom info
John Roe was a much admired figure in topology and noncommutative geometry, and the creator of the C*-algebraic approach to coarse geometry. John died in 2018 at the age of 58. My aim in the first part of the lecture will be to explain in very general terms the major themes in John’s work, and illustrate them by presenting one of his best-known results, the partitioned manifold index theorem. After the break I shall describe a later result, about relative eta invariants, that has inspired an area of research that is still very active.