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Geometry and analysis of groups and manifolds

Convergence and collapse of CAT(0)-spaces and groups

speaker: Nicola Cavallucci

abstract: I will present the possible Gromov-Hausdorff limits of geodesically complete, CAT(0)-spaces admitting a discrete group of isometries of bounded codiameter and the structure of the possible limit groups. The focus will be on the collapsing case: namely when the injectivity radius of the quotient space goes to zero along the sequence. Joint work with A.Sambusetti.

timetable:
Wed 28 Jun, 11:00 - 11:30, Aula Dini
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