Crystallisations of 3-manifolds

In my short talk I introduce a class of 4-edge-coloured graphs that
represent closed (orientable) 3-manifolds.

A criterion in terms of coloured graphs for homeomorphism of the
represented manifolds derived by Ferri and Gagliardi will be presented.

Further we can speculate how the graphs presented two weeks ago by
Kaiser are related to the crystallisations.