Crossing number inequality
ID: crossing-number-inequality
The crossing number inequality is a concept from graph theory that relates to the crossing number of a graph, which is a measure of how many edges of the graph cross each other when the graph is drawn in the plane. The crossing number, denoted as \( cr(G) \), of a graph \( G \) is defined as the minimum number of crossings that occur in any drawing of the graph in the plane.
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