alexa Choice of Origin, Location of Group and Uniqueness of Hermann-Mauguin Symbols
ISSN: 2320-2459

Research & Reviews: Journal of Pure and Applied Physics
Open Access

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Research Article

Choice of Origin, Location of Group and Uniqueness of Hermann-Mauguin Symbols

Vojtech Kopsky*

Freelance Research Scientist, Bajkalsk 1170/28, Praha 10, Czech Republic.

*Corresponding Author:
Vojtech Kopsky
Freelance Research Scientist Bajkalsk
1170/28, Praha 10, Czech Republic.
E-mail: [email protected]

Received Date: 28/10/2015; Accepted Date: 28/03/2016; Published Date: 30/03/2016

 

Abstract

It is shown that widely accepted opinion which says that Euclidean groups cannot be located in space because they are abstract groups, is incorrect. Euclidean groups are quite certain groups of operators in space and as the symmetry operations have its location di ering by fractions of the translation normal-izer of the group the group itself has also a certain location. We show, however that derivation of space groups with the use of factor systems indeed leads to groups which are not located while derivation with the use of systems of non-primitive translations leads to a set of groups di ering in location by a fraction of their Euclidean normalizer. Some examples of possible use are given.

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