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Scilab manual >> Polynomials > htrianr

htrianr

多項式行列の三角化

呼び出し手順

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

パラメータ

A

多項式行列

Ar

多項式行列

U

ユニモジュラ多項式行列

rk

整数, Aの通常ランク

説明

多項式行列 Aの三角化.

A[m,n] , m <= nです.

Ar=A*U

警告: "小さい"項の削除が行われます(関数コードを参照).

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)

参照

<< hrmt Polynomials invr >>

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