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  • Work
    Article
    Quiroga-Barranco, Raul
    Rigid geometric structures on manifolds, introduced by Gromov, are characterized by the fact that their infinitesimal automorphisms are determined by their jets of a fixed order. Important examples of such structures are those given by an H-reduction . . .
  • Work
    Article
    Candel, A.
    Rigid geometric structures on manifolds, introduced by Gromov, are characterized by the fact that their infinitesimal automorphisms are determined by their jets of a fixed order. Important examples of such structures are those given by an H-reduction . . .
  • Work
    Article
    Candel, Alberto
    For geometric structures of type Q, we prove that being rigid depends only on the stabilizers for the action on Q. We also prove that to any rigid structure we can associate a ‘‘natural’’ parallelism. Moreover, if the rigid structure is analytic, then . . .
  • 1831cn40t?file=thumbnail
    Article
    Quiroga-Barranco, Raul
    We study the properties of rigid geometric structures and their relation with those of finite type. The main result proves that for a noncompact simple Lie group G acting analytically on a manifold M preserving a finite volume and either a connection . . .