# Difference between revisions of "Site symmetry"

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− | <Font color="blue"> Symétrie ponctuelle </Font> (''Fr''). <Font color="red"> Punktsymmetrie, Lagesymmetrie </Font> (''Ge''). <Font color="green"> Simetria punctual </Font> (''Sp''). | + | <Font color="blue"> Symétrie ponctuelle </Font> (''Fr''). <Font color="red"> Punktsymmetrie, Lagesymmetrie </Font> (''Ge''). <Font color="green"> Simetria punctual </Font> (''Sp''). <Font color="black"> Simmetria del sito, simmetria puntuale </Font> (''It''). |

== Definition == | == Definition == |

## Revision as of 08:00, 7 May 2006

Symétrie ponctuelle (*Fr*). Punktsymmetrie, Lagesymmetrie (*Ge*). Simetria punctual (*Sp*). Simmetria del sito, simmetria puntuale (*It*).

## Definition

The site-symmetry group of a point is the finite group formed by the set of all symmetry operations of the space group of the crystal that leave that point invariant. It is isomorphic to a (proper or improper) subgroup of the point group to which the space group under consideration belongs. In general, the origin is a point of highest site symmetry.

## See also

Sections 2.2.12 and 8.3.2 of *International Tables of Crystallography, Volume A*