EntityQ3527004· pop 5· linked from 8 articlesBEST theoremSign in to saveformula used in graph theoryConnectionsNicolaas Govert de BruijnEntityTatyana Pavlovna EhrenfestEntityRussianEntityLeonhard EulerEntityInternational Standard Book NumberEntityWayback MachineEntitydigital object identifierEntitydiscrete mathematicsEntitygraph theoryEntitydeterminantEntitygraphEntityJSTOREntityCambridge University PressEntitytreeEntitycomplete graphEntitydirected graphEntitytime complexityEntityEulerian pathEntityW. T. TutteEntitycomplete bipartite graphEntityCategoriesDirected graphsTheorems in graph theory