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arXiv 1105.3652math.DG
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三维Minkowski空间中具有实主曲率的类时Weingarten曲面及其自然偏微分方程

Time-like Weingarten surfaces with real principal curvatures in the three-dimensional Minkowski space and their natural partial differential equations

Vesselka Mihova, Georgi Ganchev

摘要:

研究三维Minkowski空间中具有可对角化的第二基本型的类时曲面。在任意类时W-曲面上引入局部自然主参数,证明了该类曲面由一个满足自然非线性偏微分方程的特殊不变函数唯一确定(直到运动).这个结果可以解释为Minkowski空间中具有实主曲率的类时W曲面的Lund-Regge约化问题的一个解。我们将这一理论应用于线性分式类时W-曲面,得到了描述它们的自然偏微分方程。

英文摘要:

We study time-like surfaces in the three-dimensional Minkowski space with diagonalizable second fundamental form. On any time-like W-surface we introduce locally natural principal parameters and prove that such a surface is determined uniquely (up to motion) by a special invariant function, which satisfies a natural non-linear partial differential equation. This result can be interpreted as a solution of the Lund-Regge reduction problem for time-like W-surfaces with real principal curvatures in Minkowski space. We apply this theory to linear fractional time-like W-surfaces and obtain the natural partial differential equations describing them.

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