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Combinatorial and Gauge theoretical methods in low dimensional topology and geometry

A pair of small aspherical 4-manifolds

speaker: Bruno Martelli (Università di Pisa)

abstract: We describe a pair of "small" aspherical 4-manifolds with curious properties. One is a cusped hyperbolic 4-manifold, that is the complement of a nice collection of 5 tori in the 4-sphere. The other is not hyperbolic, and is the fiber of a fibration of a hyperbolic 5-manifold onto the circle.


timetable:
Mon 3 Jun, 16:00 - 17:00, Aula Dini
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