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单词 Scalar
释义

scalar


A scalar is a quantity that is invariantMathworldPlanetmath under coordinatePlanetmathPlanetmath transformation, also known as a tensor of rank 0. For example, the number 1 is a scalar, so is any number or variable n. The point (3,4) is not a scalar because it is variable under rotationMathworldPlanetmath.As such, a scalar can be an element of a field over which a vector spaceMathworldPlanetmath is defined.

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更新时间:2025/5/4 9:25:10