rowcompr

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!).