Conjugacy Classes in Kac-Moody Groups and Principal G-Bundles over Elliptic Curves
Stephan Mohrdieck, Robert Wendt
Abstract
For a simple complex Lie group G the connected components of the moduli space of G-bundles over an elliptic curve are weighted projective spaces. In this note we will provide a new proof of this result using the invariant theory of Kac-Moody groups, in particular the action of the (twisted) Coxeter element on the root system of G.
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