>minors ( matrix -- matrix' )
Extra matrix operations

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Vocabulary
math.matrices.extras

Inputs

matrix

a square-matrix

Outputs

matrix'

a square-matrix

Word description
Calculate the matrix of minors of the input matrix. See minor on Wikipedia.

Notes

•	The shape of the input matrix is preserved in the output.
•	This word is intended for use with "flat" (2-dimensional) matrices.
•	This word assumes that elements of the input matrix are compatible with the following words: determinant ( matrix -- determinant )

Errors
non-square-determinant if the input matrix is not a square-matrix.

Examples

USING: math.matrices.extras prettyprint ; { { -8 0 7 -11 } { 15 0 -3 -11 } { 1 -10 -4 6 } { 11 -15 3 -15 } } >minors .
{ { 1710 -130 2555 -1635 } { -690 -286 -2965 1385 } { 1650 -754 3795 -1215 } { 1100 416 2530 -810 } }

Definition

USING: math.matrices sequences ;

IN: math.matrices.extras

: >minors ( matrix -- matrix' )
    matrix-except-all [ [ determinant ] map ] map ;