[r-t] Cayley graphs of doubles extents

[Alexander Holroyd]

It doesn't seem that way to me.  They are respectively grey and green.
(Slightly different shades in the text and in the picture, I grant you).

On Fri, 12 Nov 2004, Martin Cansdale wrote:

> I don't know if it's just my browser, but 123 and 145 seem to be
> labelled the wrong way round, colour wise.
>
> MJC
>
> On Thu, 11 Nov 2004 16:56:11 -0800 (PST), Alexander Holroyd
> <holroyd at math.ubc.ca> wrote:
> > http://www.math.ubc.ca/~holroyd/cayley/
> >
> > Follow the link above for interactive pictures of Cayley graphs of the
> > extent of doubles.  Drag the mouse over the image to rotate it (Java
> > required).
> >
> > Each vertex (point where several lines meet) represents a row on 5 bells.
> > Two vertices are connected by an edge (line) when one can get from one to
> > the other by a legal change.  The colour of the edge indicates the place
> > notation.  Single changes are shown in one picture, double changes (in the
> > in-course extent) in another.
> >
> > A doubles extent corresponds to a Hamiltonian cycle in this graph (that
> > is, a circuit which visits each vertex exactly once).
> >
> > Enjoy!  Ander
> >
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>
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