space-time curve

By associating the spin vector of the inhomogeneous generalized Heisenberg ferromagnet with the binormal to a moving curve in Minkowski space, the corresponding equivalent coupled inhomogeneous integrable equation is present.

通过将非均匀推广的海森堡铁磁链的自旋矢量取为闵可夫斯基空间中曲线的次法矢量，得到相应的耦合的非均匀可积方程。

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As the Princeton physicist John Wheeler later described it, "Space-time tells matter how to move; matter tells space-time how to curve." Easy to say, but hard to compute.

正如普林斯顿大学物理学家约翰·惠勒（John Wheeler）后来所说，“时空告诉物质如何移动；物质告诉时空如何弯曲。”说起来容易，计算起来难。

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Properties of Jordan Curve and Topological Paradox in Spherical Surface Raster Space

球面栅格空间中的Jordan曲线性质及其拓扑矛盾分析

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Space-time could curve, fold, wrap itself up around a dead star and disappear into a black hole.

时空可以弯曲、折叠、在死去的恒星周围把自己包覆起来，消失成一个黑洞。

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Rectifying Curves in three-dimensional Minkowski space 3D Representation of Limb Geometry via Curve-Cutting

三维Minkowski空间中的从切曲线肢体外形三维显示的曲线拟合法

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At last, the location and 3D shape of the pipeline is reconstructed by the use of the space curve fitting method, which is based on curvature information of discrete points.

然后运用基于等距离离散点曲率信息的空间曲线重建方法重建出管道的空间位置形状。

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Spherical Map of Space Closed Curve

空间闭曲线的球面映射

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