How can it be true
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.
תאריך עדכון אחרון : 18/11/2017