• Corpus ID: 232046217

Integration questions in separably good characteristics

  title={Integration questions in separably good characteristics},
  author={Marion Jeannin},
Let G be a reductive group over an algebraically closed field k of separably good characteristic p > 0 for G. Under these assumptions a Springer isomorphism φ : Nred(g)→ Vred(G) always exists, allowing to integrate any p-nilpotent elements of g into a unipotent element of G. One should wonder whether such a punctual integration can lead to a systematic integration of p-nil subalgebras of g. We provide counter-examples of the existence of such an integration in general as well as criteria to… 
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