« first day (2698 days earlier)      last day (1256 days later) » 

3:19 AM
Might be of interest to anyone that works in group theory:
8
Q: What does it mean to assign group operations to distinct sets for space groups?

B. BrekkeI am trying to understand space groups in crystallography. In International tables for crystallography, for a nonsymmorphic space group, they list some symmetry operations. 8 of them are listed under the (0,0,0)+ set and 8 in the (1/2, 1/2, 1/2)+ set. What does this mean? Are there 16 operations ...

 

« first day (2698 days earlier)      last day (1256 days later) »