Whitney's theorem
English
editEtymology
editIntroduced by Hassler Whitney (1907–1989), American mathematician.
Proper noun
edit- A theorem stating that two connected graphs are isomorphic if and only if their line graphs are isomorphic, with a single exception: K3, the complete graph on three vertices, and the complete bipartite graph K1,3, which are not isomorphic but both have K3 as their line graph.
- Whitney's theorem can be extended to hypergraphs.