Re: CCL:Eigenvalues of hessian

Is your system linear?
 "Daniel R. Rohr" <rohrd.-at-.students.uni-marburg.de> said:
 > Hi CCLers
 >
 >  Does anybody of you know, why there are more than 3N-6 nonzero
 > eigenvalues of the hessian? I am especially interested in the question,
 > whether this error is due to the errors made by differentiation or
 > whether they are due to an error within the method itself. I usually get
 > only 3 zero eigenvalues. No matter if the hessian is calculated on a
 > stationary point or not.
 >
 > Thanks for your help
 >
 > Daniel Rohr
 >
 > --
 > -----------------------------------------------------------------------
 >  Daniel Rohr                                    Fachbereich Chemie der
 >                                                 Philipps-Universitdt
 >  Tel.: +49-6421-28-25686                        Hans-Meerwein-Stra_e
 >  Fax.: +49-6421-28-25566                        D-35043 Marburg
 >  eMail: rohrd.-at-.stud-mailer.uni-marburg.de        Germany
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 --
 Amity Andersen
 UCLA
 Dept. of Chemistry & Biochemistry
 Room:  3051 Young Hall
 (310) 206-5931
 andersen.-at-.chem.ucla.edu