Theorem providing a lower bound to the crossing number; for sufficiently large graphs, the crossing number is not less than a constant times the cube of the number of edges divided by the square of the number of vertices
теорема про нижню межу мінімального числа схрещень графа як функцію числа ребер і вершин графа (uk)
theorem providing a lower bound to the crossing number; for sufficiently large graphs, the crossing number is not less than a constant times the cube of the number of edges divided by the square of the number of vertices (en)
teoremo pri suba baro de kruciĝonombro de grafo (eo)