Deligne's topological central extension is universal |
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Authors: | Gopal Prasad |
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Institution: | Department of Mathematics, University of Michigan, Ann Arbor, MI 48109-1109, USA |
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Abstract: | We give a purely “local” proof of the fact that the topological central extension of G(k), G an absolutely almost simple algebraic group defined and isotropic over a nonarchimedean local field k, by the finite group μ(k) of roots of unity in k, constructed by Pierre Deligne, is a universal topological central extension of G(k). |
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