Let M be a connected oriented surface and let Gc 2 be the Grassmannian of oriented 2-planes in Euclidean (2 + c)-space, E2+c. Smooth maps t: M → Gc 2 are studied to determine whether or not they are ...
This is a preview. Log in through your library . Abstract In this paper, we study some characterization of ruled surfaces in Minkowski space in terms of the Gauss map. We give new examples of ...
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