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Eine innere Kennzeichnung der verzerrten Produkte. (German) Zbl 0387.53014


MSC:

53C20 Global Riemannian geometry, including pinching
57R30 Foliations in differential topology; geometric theory
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References:

[1] Bishop, R.L., O’Neill, B.: Manifolds of negative curvature. Transactions of the A.M.S.145, 1-49 (1969) · Zbl 0191.52002
[2] Dombrowski, P.: Jacobi fields, totally geodesic foliations, and geodesic differential forms. Resultate der Mathematik (erscheint demnächst) · Zbl 0408.53027
[3] Kobayashi, S., Nomizu, K.: Foundations of differential geometry. Band 1 u. 2. New York: Interscience Publishers 1963 und 1969 · Zbl 0119.37502
[4] Nomizu, K.: Lie groups and differential geometry. Publ. Math. Soc. Japan, Tokyo 1956 · Zbl 0071.15402
[5] Nomizu, K., Yano, K.: On circles and spheres in Riemannian geometry. Math. Ann.210, 163-170 (1974) · Zbl 0282.53037
[6] de Rham, G.: Sur la réductibilité d’un espace de Riemann. Comment. Math. Helv.26, 328-344 (1952) · Zbl 0048.15701
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