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math.CO2020★ 2 cited
The chromatic number of 2-edge-colored and signed graphs of bounded maximum degree
Christopher Duffy, Fabien Jacques, Mickael Montassier +1
A 2-edge-colored graph or a signed graph is a simple graph with two types of edges. A homomorphism from a 2-edge-colored graph to a 2-edge-colored graph is a mapping $φ: V(…
math.CO2020
Chromatic polynomials of 2-edge coloured graphs
I. Beaton, D. Cox, C. Duffy +1
Using the definition of colouring of -edge-coloured graphs derived from -edge-coloured graph homomorphism, we extend the definition of chromatic polynomial to -edge-colour…