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Showing 2017 · math.COShow all
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math.CO2017
Extrema Property of the -Ranking of Directed Paths and Cycles
Breeanne Baker Swart, Rigoberto Flórez, Darren A. Narayan +1
A -ranking of a directed graph is a labeling of the vertex set of with positive integers such that every directed path connecting two vertices with the same label in…
math.CO2017
Maximizing the number of edges in optimal -rankings
Rigoberto Florez, Darren A. Narayan
A -ranking is a vertex -coloring such that if two vertices have the same color any path connecting them contains a vertex of larger color. The rank number of a graph is small…