منابع مشابه
Crystallography of Icosahedral Crystals
The crystallography of icosahedral crystals is constructed. The actual three-dimensional crystal is represented by a three-dimensional cut in a regular six-dimensional periodic crystal with symmetry described by a six-dimensional space group, and the positions of atoms correspond to an arrangement of hypersurface segments. The resulting crystal can not in general be viewed as a space-filling ar...
متن کاملIcosahedral coincidence rotations
The coincidence problem for three-dimensional discrete structures with icosahedral symmetry is reinvestigated. We present a parametric description of the coincidence rotations based on special quaternions, called icosian numbers. In particular, we give a characterization of the possible coincidence indices S-factors and present a complete list of the possible rotations with S < 50.
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ژورنال
عنوان ژورنال: Journal of General Virology
سال: 1973
ISSN: 0022-1317,1465-2099
DOI: 10.1099/0022-1317-20-supplement-17