Geodesic
On characterization of the sphere in $E^4$ by means of the parallelness of certain vector fields
Časopis pro pěstování matematiky, Tome 105 (1980) no. 1, pp. 56-72

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DOI : 10.21136/CPM.1980.118047
Classification : 53A05 
Svoboda, Karel. On characterization of the sphere in $E^4$ by means of the parallelness of certain vector fields. Časopis pro pěstování matematiky, Tome 105 (1980) no. 1, pp. 56-72. doi: 10.21136/CPM.1980.118047
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[1] A. Švec: Contributions to the global differential geometry of surfaces. Rozpravy ČSAV 87, 1, 1977, 1-94. | MR

[2] A. Švec: On orthogonal conjugate nets in $E^4$. Comm. mat. Univ. Car. I6, 1 1975, 183-187. | MR

[3] K. Svoboda: Some global characterizations of the sphere in $E^4$. Čas. pro pěst. matem. 4, 103(1978) 391-399. | MR

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