Dear Paolo, Thank you very much for explaining it to me. By trying to printout values, I also found the tricky thing of the k point weight add up to 2.0000. This fact also partially answered my question.
Best regards, W. YU ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html
