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单词 Cartesian tensor
释义

Cartesian tensor

英语百科

Cartesian tensor

Two different 3d orthonormal bases: each basis consists of unit vectors that are mutually perpendicular.
The same position vector x represented in two 3d rectangular coordinate systems each with an orthonormal basis, the cuboids illustrate the parallelogram law for adding vector components.
Top: Angles from the xi axes to the xi axes. Bottom: Vice versa.
Cyclic permutations of index values and positively oriented cubic volume.Anticyclic permutations of index values and negatively oriented cubic volume.Non-zero values of the Levi-Civita symbol εijk as the volume ei · ej × ek of a cube spanned by the 3d orthonormal basis.

In geometry and linear algebra, a Cartesian tensor uses an orthonormal basis to represent a tensor in a Euclidean space in the form of components. Converting a tensor's components from one such basis to another is through an orthogonal transformation.

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更新时间:2025/6/20 14:23:59