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单词 matrix
释义

matrix

(matrices) A rectangular array of entries displayed in rows and columns and enclosed in brackets. The entries are elements of some suitable set, either specified or understood. They are often numbers, perhaps integers, real numbers, or complex numbers, but they may be, say, polynomials or other expressions. An m × n matrix has m rows and n columns and can be written

Round brackets may be used instead of square brackets. The subscripts are read as though separated by commas: for example, a23 is read as ‘a, two, three'. The matrix above may be written in abbreviated form as [aij], where the number of rows and columns is understood and aij denotes the entry in the ith row and jth column. See addition (of matrices), block matrix, determinant, diagonal matrix, identity matrix, inverse matrix, matrix groups, matrix of a linear map, multiplication (of matrices), square matrix, trace, transpose, triangular matrix.

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更新时间:2025/4/30 6:53:08