M^(2,1)中极值曲面的奇性

THE SINGULARITY OF EXTREMAL SURFACES IN M^(2,1)

本文研究三维Minkowski空间M^(2,1)中混合型极值曲面的奇性,证明了奇性沿特征线传播的性质。

This paper we study the singularity of mixed extremal surfacce in the 3-dimensional Minkowski space M^(2,1), and shown the singularity is propagated along charachterestic line.