Colour Switching and Homeomorphism of Manifolds
Massimo Ferri · Canadian Journal of Mathematics · 1987
Throughout this paper, we work in the PL and pseudosimplicial categories, for which we refer to [17] and [10] respectively. For the graph theory involved see [9]. An h-coloured graph (Γ, γ) is a multigraph Γ = (V(Γ), E(Γ)) regular of degree h, endowed with an edge-coloration γ by h colours. If is the colour set, for each we set For each set . For n ∊ Z, n ≧ 1, set Δn will be mostly used to denote the colour set for an (n + 1)-coloured graph.