invertible-matrix? ( matrix -- ? )
Extra matrix operations

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Vocabulary
math.matrices.extras

Inputs
matrixa matrix


Outputs
?a boolean


Word description
Tests whether the input matrix has a multiplicative-inverse. In order for a matrix to be invertible, it must be a square-matrix, or, if it is non-square, it must not be of +deficient-rank+.

Examples
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Definition