1991
DOI: 10.1017/s0013091500005149
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Surfaces with isometric geodesics

Abstract: The aim of the paper is to prove the Theorem: Let M be a surface in the euclidean space £ ' which is diffeomorphic to the sphere and suppose that all geodesies of M are congruent. Then M is a euclidean sphere.1980 Mathematics subject classification (1985 Revision): 53.53A05. IntroductionThe aim of this paper is to prove the following: Theorem. Let M be a surface in the euclidean space E 3 , which is diffeomorphic to the sphere S 2 . We suppose that all geodesies of M are congruent. Then M is a euclidean 2-sphe… Show more

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Cited by 3 publications
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“…Compactness of M, which implies that M is a diffeomorphic to a sphere, is crucial in establishing the above result (see [3]). …”
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confidence: 78%
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“…Compactness of M, which implies that M is a diffeomorphic to a sphere, is crucial in establishing the above result (see [3]). …”
mentioning
confidence: 78%
“…In the present note following the principal ideas of [3] we are able, for the first time, to remove the compactness assumption. In fact we show:…”
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confidence: 98%
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