Opuscula Math. 28, no. 3 (2008), 313-324

 
Opuscula Mathematica

On the perfectness of C∞,s-diffeomorphism groups on a foliated manifold

Jacek Lech

Abstract. The notion of \(C^{r,s}\) and \(C^{\infty,s}\)-diffeomorphisms is introduced. It is shown that the identity component of the group of leaf preserving \(C^{\infty,s}\)-diffeomorphisms with compact supports is perfect. This result is a modification of the Mather and Epstein perfectness theorem.

Keywords: group of \(C^{\infty}\)-diffeomorphisms, perfectness, commutator, foliation.

Mathematics Subject Classification: 22E65, 57R50.

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Jacek Lech, On the perfectness of C∞,s-diffeomorphism groups on a foliated manifold, Opuscula Math. 28, no. 3 (2008), 313-324

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