[GAP Forum] Partitions and orbits of automorphism groups

[Matan Ziv-Av]

On Thu, 11 Jul 2013, Ebrahim Ghorbani wrote:

> Dear Forum,
>
> I have a partition of the vertex set of a vertex-transitive graph G.
> I guess that this partition are the orbit partition of some subgroup of Aut(G).
> Is there any way to find out this?

Find the stabilizer (as a tuple of sets) of the partition in Aut(G). If 
the orbits of any subgroup gives this partition, then the stabilizer 
also does.


-- 
Matan Ziv-Av.                         matan at svgalib.org