Point symmetry: Difference between revisions
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< | <font color="blue">Symétrie ponctuelle</font> (''Fr''). <font color="red">Punktsymmetrie</font> (''Ge''). <font color="black">Simmetria del sito, simmetria puntuale</font> (''It''). <font color="green">Simetría puntual</font> (''Sp''). | ||
== Definition == | == Definition == | ||
The point symmetry of a position is its [[site symmetry]]. The point symmetry, or point group of a lattice is the group of linear mappings (symmetry operations, isometries) that map the vector lattice '''L''' onto itself. Those [[geometric crystal classes]] to which point symmetries of lattices belong are called holohedries. | The point symmetry of a position is its [[site symmetry]]. The point symmetry, or point group, of a lattice is the group of linear mappings (symmetry operations, isometries) that map the vector lattice '''L''' onto itself. Those [[geometric crystal class|geometric crystal classes]] to which point symmetries of lattices belong are called [[holohedry|holohedries]]. | ||
== See also == | |||
*Chapter 3.2 of ''International Tables for Crystallography, Volume A'', 6th edition | |||
[[Category:Fundamental crystallography]] | |||
Latest revision as of 09:59, 17 November 2017
Symétrie ponctuelle (Fr). Punktsymmetrie (Ge). Simmetria del sito, simmetria puntuale (It). Simetría puntual (Sp).
Definition
The point symmetry of a position is its site symmetry. The point symmetry, or point group, of a lattice is the group of linear mappings (symmetry operations, isometries) that map the vector lattice L onto itself. Those geometric crystal classes to which point symmetries of lattices belong are called holohedries.
See also
- Chapter 3.2 of International Tables for Crystallography, Volume A, 6th edition