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Speaker:

Martin Kerin
Affiliation:

Uni Münster
Date:

Thu, 2017-01-26 16:30 - 17:30
Location:

MPIM Lecture Hall
Parent event:

Oberseminar Differentialgeometrie Since their discovery, there has been much interest in the question of precisely which exotic spheres

admit a metric with non-negative sectional curvature. In dimension 7, Gromoll and Meyer found

the first such example. It was subsequently shown by Grove and Ziller that all of the Milnor spheres

admit non-negative curvature. In this talk, it will be demonstrated that the remaining exotic 7-spheres

also admit non-negative curvature. This is joint work with K. Shankar and S. Goette.

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