view article
Figure 16
If a point with coordinates (x, y, z) moves toward a point-symmetry element (here a twofold axis in the diagonal direction), the distance to its replica generated by that symmetry operation becomes smaller and smaller. When the point finally lands on this symmetry element (the diagonal twofold axis in this case), the two positions coalesce into one, with coordinates constrained by this particular symmetry element, here (x, x, 0).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 43| Part 5| August 2010| Pages 1150-1171
doi:10.1107/S0021889810026956
Follow J. Appl. Cryst.
Sign up for e-alerts
E-alerts
Follow J. Appl. Cryst. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS