# Difference between revisions of "Twinning by inversion"

### From Online Dictionary of Crystallography

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The symmetry operation relating pairs of domain structures twinned by inversion may be represented by inversion through a point or by some other isometry equivalent to inversion under the point symmetry group of the domain structure. A two-domain-structure twin that is twinned by inversion is called an ''inversion twin'', but this term is not appropriate when there are more than two domain structures. | The symmetry operation relating pairs of domain structures twinned by inversion may be represented by inversion through a point or by some other isometry equivalent to inversion under the point symmetry group of the domain structure. A two-domain-structure twin that is twinned by inversion is called an ''inversion twin'', but this term is not appropriate when there are more than two domain structures. | ||

+ | == See also == | ||

+ | |||

+ | Section 3.3 of ''International Tables of Crystallography, Volume D''<br> | ||

[[Category:Fundamental crystallography]] | [[Category:Fundamental crystallography]] |

## Revision as of 05:36, 14 February 2006

## Definition

The symmetry operation relating pairs of domain structures twinned by inversion may be represented by inversion through a point or by some other isometry equivalent to inversion under the point symmetry group of the domain structure. A two-domain-structure twin that is twinned by inversion is called an *inversion twin*, but this term is not appropriate when there are more than two domain structures.

## See also

Section 3.3 of *International Tables of Crystallography, Volume D*