Within differential geometry are the concepts of fiber bundles and calculus on manifolds, in particular, vector and tensor calculus.

微分几何包含这样的概念：纤维束和流形上的微积分，特别是矢量与张量微积分。

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The velocity field resulting from vortex flow is studied. The vector field distribution and geometry topology characteristic are discussed by means of numerical simulations.

研究了由涡度诱导出的速度场，采用数值模拟方法，讨论了矢量场的分布和几何拓扑性质。

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According to the geometry distribution property of Support Vector(SV), this paper proposes the concept of adjacent boundary model and SV pre-selecting algorithm.

根据支持向量的几何分布特性，提出相邻边界模型的概念以及一种支持向量预选算法。

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