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defines in graph theory defines in graph theory
Simply, updating the existing distance with later received minimal value when a shortest path problem is solved in a graph.
K.M.Anura Wijayasingha.
Journal of Graph Theory was created in 1977.
distance time graph is a graph traveled in a graph which shows how much we have traveled in equal period of time.
Distance you read off directly from the graph. Speed is the rate of increase of distance, so it is the slope (gradient) of the graph.