[r-t] # Extents on N bells

[Chris Poole]

On Thu, 19 Aug 2004, Chris Poole wrote:

> > --On 19 August 2004 10:10 +0100 Chris Poole <poole at maths.ox.ac.uk> wrote:
> >
> > > Why not map the nodes to edges (and vice versa).
> >
> > How?  You can't make this work in a one-to-one way - try it.

... don't you get round it by using hyperedges?