Extremal Surfaces of Mixed Type in Minkowski Space Rn+1
A connected 2-dimensional submanifold in Minkowski space is called a surface of mixed type if it contains a space-like part and a time-like part simultaneously. In the present paper we consider the extremal surfaces of mixed type in Minkowski space Rn+1.
The time-like part and space-like part are separated by a null-curve.
The surface is analytic not only on the space-like part but also in some mixed region.
There is an explicit algorithm for the construction of all these extremal surfaces of mixed type globally, starting from given analytic curves in Rn.
The same results for 3-dimensional Minkowski space were obtained earlier [G2], [G3].
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