[GAP Forum] Using GAP-system

[Laurent Bartholdi]

Very easy:

ForAll(Combinations(C,2),p->p[1]*p[2] in C or p[1]*p[2]<>p[2]*p[1]);

On Nov 23, 2007 8:00 PM, Binod Kumar Sahoo <binodkumar at gmail.com> wrote:

> Dear Members,
>
> Could you please help me with the following:
>
> Let C be a subset of a given finite group G. I want to determine whether C
> is closed under commuting product.
> That is, x*y is an element of C whenever [x,y]=1 for *distinct* x and y in
> C.
> Using GAP, how should I perform this?
>
> With regards,
> Binod Kumar Sahoo
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