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Справка Scilab >> Linear Algebra > Kernel > fullrfk

fullrfk

full rank factorization of A^k

Syntax

[Bk,Ck]=fullrfk(A,k)

Arguments

A

real or complex matrix

k

integer

Bk,Ck

real or complex matrices

Description

This function computes the full rank factorization of A^k i.e. Bk*Ck=A^k where Bk is full column rank and Ck full row rank. One has range(Bk)=range(A^k) and ker(Ck)=ker(A^k).

For k=1, fullrfk is equivalent to fullrf.

Examples

A=rand(5,2)*rand(2,5);[Bk,Ck]=fullrfk(A,3);
norm(Bk*Ck-A^3,1)

See also

  • fullrf — full rank factorization
  • range — range (span) of A^k
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Last updated:
Tue Feb 14 15:13:21 CET 2017