3:00 p.m., Friday (November 4, 2005)


Michael Thaddeus
Columbia University

Holomorphic curves on infinite-dimensional homogeneous spaces

One might expect the space of holomorphic curves on an infinite-dimensional complex manifold to be too huge to understand well. But in certain cases -- when the manifold is a quotient of an affine Kac-Moody group by a parabolic subgroup -- Atiyah observed that the based holomorphic curves are parametrized by a finite-dimensional space. We will explain how to compactify this space and study its topology using a construction similar to the "stable maps" of Kontsevich.

Refreshments will be served at 2:45 p.m. (MATX 1115, Math Faculty Lounge).

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