[GAP Forum] (no subject)

[Alexander Hulpke]

Dear Forum,

On Apr 19, 2011, at 6:56 AM, Sam Taylor wrote:

> Dear Sir/Madam, I have seen the centralizer of an element of a group in the group.Can GAP calculate the centralizer of a group G in a group H. Fro example can GAP calculate the centralizer of MathieuGroup(9); in PGL(2,7); ThanksRegards

Centralizer(H,G) will do as desired.

Incidentally, this information is available in the manual, for example by looking up `Centralizer' in the index
http://www.gap-system.org/Manuals/doc/htm/theindex.htm


Regards,

    Alexander Hulpke

-- Colorado State University, Department of Mathematics,
Weber Building, 1874 Campus Delivery, Fort Collins, CO 80523-1874, USA
email: hulpke at math.colostate.edu, Phone: ++1-970-4914288
http://www.math.colostate.edu/~hulpke