Graphs with coloring redundant edges
نویسندگان
چکیده
A graph edge is d-coloring redundant if the removal of the edge does not change the set of dcolorings of the graph. Graphs that are too sparse or too dense do not have coloring redundant edges. Tight upper and lower bounds on the number of edges in a graph in order for the graph to have a coloring redundant edge are proven. Two constructions link the class of graphs with a coloring redundant edge to the K4-free graphs and to the uniquely colorable graphs. The structure of graphs with a coloring redundant edge is explored.
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ورودعنوان ژورنال:
- EJGTA
دوره 4 شماره
صفحات -
تاریخ انتشار 2016