Convex-cocompactness of Kleinian groups and conformally flat manifolds with positive scalar curvature

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We give a sufficient condition for a higher dimensional Kleinian group Γ ⊂ Isom(ℍn+1) to be convex cocompact in terms of the critical exponent of Γ. As a consequence, we see that the fundamental group of a compact conformally flat manifold with positive scalar curvature is hyperbolic in the sense of Gromov. We give some other applications to geometry and topology of conformally flat manifolds with positive scalar curvature.

Original languageEnglish
Pages (from-to)3731-3740
Number of pages10
JournalProceedings of the American Mathematical Society
Issue number12
Publication statusPublished - 2002 Dec 1



  • Conformally flat
  • Convex cocompact
  • Higher A-genus
  • Positive scalar curvature

ASJC Scopus subject areas

  • Mathematics(all)
  • Applied Mathematics

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