A differential geometric characterization of symmetric spaces of higher rank
Patrick Eberlein, Jens Heber (1990)
Publications Mathématiques de l'IHÉS
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Patrick Eberlein, Jens Heber (1990)
Publications Mathématiques de l'IHÉS
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Artur Avila, Marcelo Viana, Amie Wilkinson (2015)
Journal of the European Mathematical Society
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We consider volume-preserving perturbations of the time-one map of the geodesic flow of a compact surface with negative curvature. We show that if the Liouville measure has Lebesgue disintegration along the center foliation then the perturbation is itself the time-one map of a smooth volume-preserving flow, and that otherwise the disintegration is necessarily atomic.
J. González-Dávila, L. Vanhecke (1994)
Colloquium Mathematicae
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Marcos Salvai (2000)
Rendiconti del Seminario Matematico della Università di Padova
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Werner Ballmann, Michael Brin (1995)
Publications Mathématiques de l'IHÉS
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Hansklaus Rummler (1989)
Publicacions Matemàtiques
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The Weitzenböck formulae express the Laplacian of a differential form on an oriented Riemannian manifold in local coordinates, using the covariant derivatives of the form and the coefficients of the curvature tensor. In the first part, we shall describe a certain "differential algebra formalism" which seems to be a more natural frame for those formulae than the usual calculations in local coordinates. In this formalism there appear some interesting differential operators...
Albert Fathi, L. Flaminio (1993)
Annales de l'institut Fourier
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We study deformations of compact Riemannian manifolds of negative curvature. We give an equation for the infinitesimal conjugacy between geodesic flows. This in turn allows us to compute derivatives of intersection of metrics. As a consequence we obtain a proof of a theorem of Wolpert.