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In mathematics, an affine combination of vectors ''x''1, ..., ''x''''n'' is a vector : called a linear combination of ''x''1, ..., ''x''''n'', in which the sum of the coefficients is 1, thus: : are scalars in ''K''. This concept is important, for example, in Euclidean geometry. The act of taking an affine combination commutes with any affine transformation ''T'' in the sense that : In particular, any affine combination of the fixed points of a given affine transformation is also a fixed point of , so the set of fixed points of forms an affine subspace (in 3D: a line or a plane, and the trivial cases, a point or the whole space). When a stochastic matrix, A, acts on a column vector, B, the result is a column vector whose entries are affine combinations of B with coefficients from the rows in A. ==See also== 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Affine combination」の詳細全文を読む スポンサード リンク
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