ÍâÍøÌìÌÃ

This is joint work with Karoubi. ÌýGiven an algebraic variety over the real numbers, we compare its Witt groups with the topological Witt groups of the underlying manifold with involutionÌýusing Atiyah's Real K-theory, Brumfiel's Theorem and a conjecture of Bruce Williams.Ìý