Double points on characteristics
Otto Röschel (1995)
Applications of Mathematics
Similarity:
Double Points on Characteristics. A fixed surface of a moving space will envelope a surface of the fixed space , if we move with respect to . In the general case at each moment of the one-parameter motion there exists a curve on , along which the position of and the enveloped surface are in contact. In the paper we study the interesting special case, where has some double point . This depends on relations between differential geometric properties in the neighbourhood...