scientific article

zbMath0645.53022MaRDI QIDQ3788651

Takushiro Ochiai, Tadashi Nagano

Publication date: 1986

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

projective equivalenceinfinitesimal projective transformationsstandard sphereLie transformation groupsstandard projective space

Mathematics Subject Classification ID

Global Riemannian geometry, including pinching (53C20)

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Jet-determination of symmetries of parabolic geometries ⋮ To the memory of Professor Tadashi Nagano ⋮ Holomorphic projective connections on compact complex threefolds ⋮ Essential Killing fields of parabolic geometries: projective and conformal structures ⋮ Groups of transformations of Riemannian manifolds ⋮ Formes normales pour les champs conformes pseudo-riemanniens ⋮ Proof of the projective Lichnerowicz conjecture for pseudo-Riemannian metrics with degree of mobility greater than two ⋮ Geodesic rigidity of Levi-Civita connections admitting essential projective vector fields ⋮ Strongly essential flows on irreducible parabolic geometries ⋮ Pseudo-Riemannian metrics on closed surfaces whose geodesic flows admit nontrivial integrals quadratic in momenta, and proof of the projective Obata conjecture for two-dimensional pseudo-Riemannian metrics ⋮ \(C^1\) deformations of almost Grassmannian structures with strongly essential symmetry

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