Extending work of Cheeger and Gromov, Lott has recently initiated a theory of collapsing under a lower bound on the curvature operator in which manifolds with almost nonnegative curvature operator play a fundamental role. I will discuss constructions of manifolds with an obstruction to this latter property in the framework of his work.
[invited by A. Dessai]
|Where?||PER 08 Phys 2.52
Chemin du Musée 3
|Contact||Department of Mathematics