Re: [Boost-users] [mailinglist] determinant of Matrices

From: yyd_iris_at_[hidden]
Date: 2005-08-09 13:02:00

Are there existing functions to compute LU, QR
decompositions?

Thanks a lot.
Vivid

--- Uwe Schmitt <schmitt_at_[hidden]> wrote:

>  
> 
> > -----Ursprüngliche Nachricht-----
> > Von: boost-users-bounces_at_[hidden] 
> > [mailto:boost-users-bounces_at_[hidden]] Im
> Auftrag von Vivid Yang
> > Gesendet: Dienstag, 9. August 2005 16:40
> > An: boost-users_at_[hidden]
> > Betreff: [mailinglist] [Boost-users] determinant
> of Matrices
> > 
> > Hi,
> > 
> > I browsed the document of ublas for a long time
> and did not find a 
> > convenient way to compute the determinant of a
> matrix.
> > Isn't it a basic function of matrix or did I miss
> something?
> 
> In general you can use LU-decomposition or QR, as
> det(A) = det(LU) = det(L)*det(U)
> or det(A) = det(QR) = det(R)
> The determinant of L, U, R is the product of the
> elements
> on the diagonal.
> 
> Greetings, Uwe.
> 
> 
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>
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> 

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