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单词 postmultiply
释义

Definition of postmultiply in English:

postmultiply

verbpostmultiplied, postmultiplies, postmultiplying ˌpəʊstˈmʌltɪplʌɪ
[with object]Mathematics

  • Multiply (a vector, matrix, or element of a group) non-commutatively by a following factor.

    〔数〕用后因子乘

    Example sentencesExamples
    • Similarly, postmultiplying Y by a J matrix creates a 6x3 matrix of row sums of Y (where each column is just a repeat of the same six row sums).
    • Given an n x n matrix A, it is always possible to find an n-element vector which postmultiplies A and gives an all zero result.
    • To test trait-specific effects, we need to introduce another matrix, T, which is used to postmultiply matrix B.

Derivatives

  • postmultiplication

    • nounˌpəʊstmʌltɪplɪˈkɛɪʃ(ə)n
    Mathematics
    • Premultiplication and postmultiplication by a Givens matrix can be performed without computing a Givens matrix explicitly.
      Example sentencesExamples
      • This method is slightly less efficient than postmultiplication and requires that the size of Vector v must equal the number of rows in Matrix m.
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更新时间：2025/2/7 3:44:07