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Scilab Help >> Polynomials > htrianr

htrianr

triangularization of polynomial matrix

Syntax

[Ar, U, rk] = htrianr(A)

Arguments

A

polynomial matrix

Ar

polynomial matrix

U

unimodular polynomial matrix.

rk

integer, normal rank of A

Description

triangularization of polynomial matrix A.

A is [m,n] , m ≤ n.

Ar=A*U

Warning: there is an elimination of "small" terms (see function code).

Examples

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)

See also

  • hrmt — gcd of polynomials
  • colcompr — column compression of polynomial matrix
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Last updated:
Mon Jan 03 14:23:25 CET 2022