Andreas Mars, Darmstadt
Kac-Moody groups can be seen as infinite-dimensional generalisations of Chevalley groups. However, our approach will use integration of the adjoint representation of the associated Kac-Moody Lie algebra and a functorial definition due to J. Tits. Unitary forms arise as the fixed point subgroup with respect to a 'twisted' Chevalley involution on the Kac-Moody groups.
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