[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Help-gsl] Complex eigenvalues

From: Hannes Basler
Subject: Re: [Help-gsl] Complex eigenvalues
Date: Thu, 10 May 2007 11:41:07 +0200

all eigenvalues of a Hermitian Matrix are real, so there is no need for complex eigenvalues if you use gsl_eigen_herm(). A symmetric matrix is a special case of a hermitian matrix and has also only real eigenvalues. If you have a nonsymmetric real matrix you can use gsl_eigen_nonsymm (), this function gives the eigenvalues in a gsl_vector_complex*. At the moment there is no function to compute the eigenvalues of a nonhermitian complex matrix in GSL.


On May 10, 2007, at 9:21 AM, Andras Simon wrote:

Hi there,

I have been searching the archives, but could not find the answer to this question: how to calculate the complex eigenvalues of a real or complex matrix ? I have tried gsl_eigen_herm() and gsl_eigen_symm(), but it appears
as both functions assume that the eigenvalues are real (the type of
eigenvalues vector is gsl_vector* type). I could not figure out how to get
the complex eigenvalues into a gsl_vector_complex*.
Any ideas ? Comments ?

Any help is appreciated, I'm stuck ;(

Andras Simon


Help-gsl mailing list

reply via email to

[Prev in Thread] Current Thread [Next in Thread]