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Actions de IR et courbure de ricci du Fibré unitaire tangent des surfaces

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Abstract

Characterisation of 2-dimensional Riemannian manifolds (M, g) (in particular, of surfaces with constant gaussian curvatureK=1/c 2, o,−1/c 2, respectively) whose tangent circle bundle (T cM, gs) (g s=Sasaki metric) admit an «almost-regular» vector field belonging to an eigenspace of the Ricci operator.

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Authors and Affiliations

  1. Claudio Buzzanca Dipartimento di Matematica, Università di Palermo, Via Archirafi, 34, 90123, PALERMO

    Claudio Buzzanca

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  1. Claudio Buzzanca
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Buzzanca, C. Actions de IR et courbure de ricci du Fibré unitaire tangent des surfaces. Rend. Circ. Mat. Palermo 35, 244–260 (1986). https://doi.org/10.1007/BF02844735

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  • DOI: https://doi.org/10.1007/BF02844735

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