Abstract

In this paper, we characterize the de Sitter space by means of spacelike and timelike curves that fullylies on it. For this purpose, we consider the tangential part of the second derivative of the unit speedcurve on the hypersurface, and obtain the vector equations of the geodesics. We find the geodesics ashyperbolas, ellipses, and helices. Moreover, we give an example of null curve with constant curvature in4−dimensional Minkowski space and we illustrate the geodesics of S11(r) × R .

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