Procedure from library matrix.lib (see matrix_lib).
matrix.lib
flatten(A); A matrix
ideal, generated by all entries from A
Example:
LIB "matrix.lib"; ring r = 0,(x,y,z),ds; matrix A[2][3] = 1,2,x,y,z,7; print(A); → 1,2,x, → y,z,7 flatten(A); → _[1]=1 → _[2]=2 → _[3]=x → _[4]=y → _[5]=z → _[6]=7