[Wien] Merry Chritmas!

[umbingz at cc.umanitoba.ca]

Dear Bogdan,

Merry Xmas and Happy New Year!
All the best wishes to you and your family!

Zhou Bing



引用 "B. Yanchitsky" <yan at im.imag.kiev.ua>:

> > 
> > I tried to transform space group of C-1 to P-1 using the following
> relation:
> > 
> > Al<-->A2 ===========> (x, y, z)+(0.5, 0.5, 0.0)
> > 
> 
> I'm not sure of what minus one means  here, but for example C1 and P1 are
> different nomenclatures for the same group. C1 comes from Schoenflies 
> set of symbols and P1 is international (Hermann-Mauguin) symbol. Another
> possibility (but most unlikely case) that C1 (group #1) is referred to the
> international nomenclature, and C means C-base centred type, this is very
> nonstandard setting for triclinic lattice. If minus one means inversion,
> then
> you have group #2, but for this group Ci label is used instead C-1. P-1 is
> international symbol for group #2. Most probably you have no need for any
> transformation, at least from my point of view.
>  
> Regards,
> Bogdan
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> 




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