rowcompr¶

row compression of polynomial matrix

Calling Sequence¶

[X,rk,Ac]=rowcompr(A)

:A polynomial matrix : :Y square polynomial matrix (left unimodular basis) : :rk normal rank of A : :Ac Ac=X*A, polynomial matrix :

row compression of polynomial matrix A.

X is a left polynomial unimodular basis which row compressed thee rows of A. rk is the normal rank of A.

Warning: elimination of “small” terms (use with care!).