[GAP Forum] centralizer of a group
Alexander Hulpke
hulpke at me.com
Thu Aug 1 09:37:46 BST 2013
Dear Forum,
Masomeh Zarei <m288.zarei at gmail.com> wrote:
> I am interested in computing the centralizer of a subgroup H of G=O(n, R)
> in O(n, R) (the orthogonal group). I would be thankful if you let me know
> whether I can do the computation while I have the orthogonal group over an
> infinite field.
The facilities for matrix groups over infinite fields are currently rather limited; in particular there is basically nothing for infinite matrix groups. Thus I'm not aware of any tool that would let you do such a calculation, though with normal form theory you are likely to be able to write down concrete centralizers by hand.
Regards,
Alexander Hulpke
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