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出典:『Wikipedia』 (2011/05/23 20:34 UTC 版)

英語による解説

引用

In linear algebra, the null vector or zero vector or empty vector is the vector (0, 0, …, 0) in Euclidean space, all of whose components are zero. It is usually written with an arrow head above or below it : or 0 or simply 0. A zero vector has arbitrary direction, but is orthogonal (ie perpendicular, normal) to all other vectors with the same number of components.