File: htrianr.man

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.TH htrianr 8 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an 
.SH NAME
htrianr - triangularization of polynomial matrix
.SH CALLING SEQUENCE
.nf
[Ar,U,rk]=htrianr(A)
.fi
.SH PARAMETERS
.TP
A
: polynomial matrix
.TP
Ar
: polynomial matrix
.TP
U
: unimodular polynomial matrix
.TP
rk
: integer, normal rank of \fVA\fR
.SH DESCRIPTION
triangularization of polynomial matrix \fVA\fR.
.LP
\fVA\fR is \fV[m,n]\fR ,   \fVm <= n\fR.
.LP
\fVAr=A*U\fR
.LP
Warning: there is an elimination of "small" terms (see function code).
.SH EXAMPLE
.nf
x=poly(0,'x');
M=[x;x^2;2+x^3]*[1,x-2,x^4];
[Mu,U,rk]=htrianr(M)
det(U)
M*U(:,1:2)
.fi
.SH SEE ALSO
hrmt, colcompr