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# Jimmy Petean : On the Yamabe invariant of Riemannian products

The Yamabe invariant of a closed manifold appears naturally when studying the total scalar curvature functional on the space of Riemannian metrics on the manifold. Computations are difficult, in particular in the positive case (when the manifold admits metrics of positive scalar curvarture, and there is no unicity of metrics of constant scalar curvature on a conformal class). In this talk I will review a little of what is known about the computation of the invariant and discuss some recent joint work with K. Akutagawa and L. Florit on the Yamabe constants of Riemannian products.

**Category**: Geometry and Topology**Duration**: 01:29:43**Date**: September 12, 2006 at 4:25 PM-
**Tags:**seminar, Geometry/topology Seminar

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