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D.3.1.25 rm_unitrow
Procedure from library matrix.lib (see matrix_lib).
- Usage:
rm_unitrow(A); A matrix (being col-reduced)
- Return:
matrix, obtained from A by deleting unit rows (having just one 1 and else 0 as entries) and associated columns
Example:
LIB "matrix.lib"; ring r=0,(A,B,C),dp; matrix m[8][6]= 0,0, 0, 0, 2C, 0, 0,0, 0, 0, -4C,A, A,-C2,0, B, -A, 0, 0,0, 1/2B,-A,B, 0, 1,0, 0, 0, 0, 0, 0,0, 0, 2A,B, 0, 0,1, 0, 0, 0, 0, 0,0, 1, 0, 0, 0; print(rm_unitrow(m)); → 0, 2C, 0, → 0, -4C,A, → B, -A, 0, → -A,B, 0, → 2A,B, 0 |