Geodesic
Some conditions for a surface in {$Esp 4$} to be a part of the sphere {$Ssp 2$}
Mathematica Bohemica, Tome 119 (1994) no. 4, pp. 367-371.

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In this paper some properties of an immersion of two-dimensional surface with boundary into {$Esp 4$} are studied. The main tool is the maximal principle property of a solution of the elliptic system of partial differential equations. Some conditions for a surface to be a part of a 2-dimensional spheren in {$Esp 4$} are presented.
DOI : 10.21136/MB.1994.126121
Classification : 53A07, 53C21
Keywords: surfaces with boundary in Euclidean four-space; maximum principle for elliptic systems of PDE 
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Bureš, Jarolím; Kaňka, Miloš. Some conditions for a surface in {$Esp 4$} to be a part of the sphere {$Ssp 2$}. Mathematica Bohemica, Tome 119 (1994) no. 4, pp. 367-371. doi : 10.21136/MB.1994.126121. http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126121/

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