Thank you Gerard.
This is exactly what I was looking for: “normalisers”.
Best regards.
Stefano Trapani
-----Message original-----
De: Gerard <g...@globalphasing.com>
à: Stefano <stefano.trap...@umontpellier.fr>
Cc: CCP4BB <CCP4BB@JISCMAIL.AC.UK>
Envoyé: lundi 24 mars 2025 11:03 CET
Sujet : Re: [ccp4bb] symmetry of symmetry (equivalent of "Cheshire
group" for point groups)
Dear Stefano,
I think that in general group theory, this object is called the
"normaliser" of the group. You could perhaps just use this general
name, rather than try and dig out another "cute" domain-specific
terminology ;-) .
With best wishes,
Gerard.
--
On Mon, Mar 24, 2025 at 10:44:28AM +0100, Stefano Trapani wrote:
> Hi
> Does anybody know if there is a conventional name to indicate the symmetry of
> the set of symmetry elements (axes, planes) of a point group?
> I know that, for space groups, the symmetry of their symmetry elements is
> called the "Cheshire symmetry".
> Is this name used also for point groups?
>
> Best regards
>
> Stefano Trapani
>
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