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Projective injections of geometries and their affine extensions

✍ Scribed by Francis Buekenhout; Michel Dehon; Isabelle De Schutter


Book ID
112535264
Publisher
Springer
Year
1995
Tongue
English
Weight
612 KB
Volume
52
Category
Article
ISSN
0047-2468

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πŸ“œ SIMILAR VOLUMES


Curious Characterizations of Projective
✍ Joseph P.S. Kung πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 136 KB

We prove the following characterization theorem: If any three of the following four matroid invariants-the number of points, the number of lines, the coefficient of Ξ» n-2 in the characteristic polynomial, and the number of three-element dependent sets-of a rank-n combinatorial geometry (or simple ma

Affine Osserman connections and their Ri
✍ E. GarcΓ­a-RΓ­o; D.N. Kupeli; M.E. VΓ‘zquez-Abal; R. VΓ‘zquez-Lorenzo πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 626 KB

Osserman property is studied for affine torsion-free connections with special attention to the 2dimensional case. As an application, examples of nonsymmetric and even not locally homogeneous Osserman pseudo-Riemannian metrics are constructed on the cotangent bundle of a manifold equipped with a tors