An Exotic Sphere with Positive Sectional Curvature

An Exotic Sphere with Positive Sectional Curvature

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Fred Wilhelm, University of California, Riverside
Fine Hall 314

I'll discuss joint work with Peter Petersen that shows that the Gromoll-Meyer exotic 7-sphere admits a metric of positive sectional curvature. I'll discuss the history of the problem and give a coarse outline of the proof.