Witt groups and unipotent elements in algebraic groups |
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| Authors: | Proud Richard |
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| Institution: | Department of Pure Mathematics and Mathematical Statistics, University of Cambridge, Centre for Mathematical Sciences Wilberforce Road, Cambridge CB3 0WB; e-mail: rgp23{at}dpmms.cam.ac.uk |
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| Abstract: | Let G be a semisimple algebraic group defined over an algebraicallyclosed field K of good characteristic p>0. Let u be a unipotentelement of G of order pt, for some t  N. In this paper it isshown that u lies in a closed subgroup of G isomorphic to theit Witt group Wt(K), which is a t-dimensional connected abelianunipotent algebraic group. 2000 Mathematics Subject Classification:20G15. |
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| Keywords: | Witt groups unipotent |
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