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| Paper IPM / M / 455 |
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| Abstract: | |
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Extended affine Weyl groups are the Weyl groups of root systems of a new
class of Lie algebras called extended affine Lie algebras. In this paper
we show that a (reduced) extended affine Weyl group is the homomorphic
image of some indefinite Kac-Moody Weyl group where the homomorphism and
its kernel are given explicitly.
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