Compact cyclic edge-colorings of graphs Original Research Article

The paper is devoted to a model of compact cyclic edge-coloring of graphs. This variant of edge-coloring finds its applications in modeling schedules in production systems, in which production proceeds in a cyclic way. We point out optimal colorings for some graph classes and we construct graphs which cannot be colored in a compact cyclic manner. Moreover, we prove some theoretical properties of considered coloring model such as upper bounds on the number of colors in optimal compact cyclic coloring.