How can it be true?

Sun, 19/11/2017 - 12:00
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Over 60 years ago, Borel, on the basis of theorems of Mostow, conjectured a topological rigidity statement that has become central to topology.  During these lectures, I will use his heuristic to suggest other statements, some true, some false, and some conjectural.  Overall, this area is devoted to a profound influence that the fundamental group has on topology and geometry.