Scilab Function
Last update : April 1993

fullrfk - full rank factorization of A^k

Calling Sequence

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

Parameters

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,  range,  

Author

F.D (1990);