Non-Square Matrix

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A Non-Square Matrix is a matrix in which the matrix horizontal length, [math]m[/math], and matrix vertical length, [math]n[/math] are not the same ([math]m \ne n[/math]).



  • (Wikipedia, 2015) ⇒ Retrieved:2015-12-5.
    • … Non-square matrices (m-by-n matrices for which m ≠ n) do not have an inverse. However, in some cases such a matrix may have a left inverse or right inverse. If A is m-by-n and the rank of A is equal to n, then A has a left inverse: an n-by-m matrix B such that BA = I. If A has rank m, then it has a right inverse: an n-by-m matrix B such that AB = I.