Geodesic
Circles and spheres in pseudo-Riemannian geometry.
Aequationes mathematicae, Tome 39 (1990) no. 2-3, pp. 134-145.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Mots-clés : constant isotropic, pseudo-Riemannian submanifolds, extrinsic sphere, circle 
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     author = {N. Abe and Y. Nakanishi and S. Yamagushi},
     title = {Circles and spheres in {pseudo-Riemannian} geometry.},
     journal = {Aequationes mathematicae},
     pages = {134--145},
     publisher = {mathdoc},
     volume = {39},
     number = {2-3},
     year = {1990},
     zbl = {0705.53026},
     url = {http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137345/}
}
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N. Abe; Y. Nakanishi; S. Yamagushi. Circles and spheres in pseudo-Riemannian geometry.. Aequationes mathematicae, Tome 39 (1990) no. 2-3, pp. 134-145. http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137345/