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[xhongjun <xhongjun@mail.ustc.edu.cn>]

Dear Xavier and Masayoshi:
  I have follow your suggestions.
 The result is "
Symmetries : space group P1 (#  1); Bravais aP (primitive triclinic).
".
The result is not anticipated.Can I lower the precision
of the positions of ions and find the space group?
Moreover,abinit find the primitive cell is triclinic,
but not hexagonal.Could you explain it to me?
Thanks a lot.
xianghjun

>Xavier Gonze wrote:
> Dear Xhongjun,
>
> Although I have not tried your input file,
> I agree with Mikami-san about xred. It might also help to use, in rprim,
> sqrt(0.75)
> instead of 0.8660254037 , please see
> http://www.abinit.org/ABINIT/Infos_v4.1/abinis_help.htm#intro3
>
> Xavier