Dear Roman: ? ?Could you please tell me how to ask questions in mailing list. i have put one question to?petsc-users at mcs.anl.gov, but i get nothing feedback ? ?
>________________________________ > ???? Jose E. Roman <jroman at dsic.upv.es> >???? PETSc users list <petsc-users at mcs.anl.gov> >????? 2013?4?14?, ???, 10:44 ?? >??: Re: [petsc-users] How to get the eigenvectors in Slepc > > > >El 14/04/2013, a las 08:04, Sonya Blade escribi?: > >> Dear All, >> >> If I have all eigenvalues as real numbers is it possible mathematically that >> I get the complex eigenvectors? Because nowhere in my solution I obtain the >> complex eigenvalues but Slepc returns the complex for eigenvectors. >> >> Your enlightenment will be appreciated. >> >> Regards, ??? ??? ??? ? ??? ??? ? > >If the eigenvector is complex then of course the eigenvalue is complex as well >(I assume your matrix is real non-symmetric). You have to get both the real >and imaginary parts of the eigenvalue. >http://www.grycap.upv.es/slepc/documentation/current/docs/manualpages/EPS/EPSGetEigenpair.html > >An alternative is to do all the computation in complex arithmetic (configure >--with-scalar-type=complex). > >Jose > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130417/4c27603e/attachment.html>
