Orbihedra of nonpositive curvature
Werner Ballmann, Michael Brin (1995)
Publications Mathématiques de l'IHÉS
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Werner Ballmann, Michael Brin (1995)
Publications Mathématiques de l'IHÉS
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Patrick Eberlein, Jens Heber (1990)
Publications Mathématiques de l'IHÉS
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Davis, Michael W., Okun, Boris, Zheng, Fangyang (1999)
Geometry & Topology
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Kaewcharoen, A., Kirk, W.A. (2006)
Abstract and Applied Analysis
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K.C. Chang, J.Q. Liu (1996)
Mathematische Zeitschrift
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Francesco Bonsante (2004-2005)
Séminaire de théorie spectrale et géométrie
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Nous illustrons une classification des espace-temps (2+1) globalement hyperboliques a courboure constant, en terms de certaines structures projectives complexes portées par les surfaces de niveau de leur temps . Ceci derive d’une theorie des , developpée en collaboration avec Riccardo Benedetti [], qui sera egalement brievement illustrée.
Ernesto A. Lacomba, J. Guadalupe Reyes (2000)
Publicacions Matemàtiques
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A mistake was found in the reasoning leading to a Lagrangian which we considered as equivalent from the formula for the action S(γ) below the classical mechanical problem (3) on "Non singular Hamiltonian systems and geodesic flows on surfaces with negative curvature", page 271.
John Beem (1997)
Banach Center Publications
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Lorentzian geometry in the large has certain similarities and certain fundamental differences from Riemannian geometry in the large. The Morse index theory for timelike geodesics is quite similar to the corresponding theory for Riemannian manifolds. However, results on completeness for Lorentzian manifolds are quite different from the corresponding results for positive definite manifolds. A generalization of global hyperbolicity known as pseudoconvexity is described. It has important...
Hruska, G.Christopher (2004)
Geometry & Topology
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