The concept of a vertex in a matroid, the non-separating cycles of a graph and a new criterion for graph planarity. (English) Zbl 0494.05036
Algebraic methods in graph theory, Vol. I, Conf. Szeged 1978, Colloq. Math. Soc. Janos Bolyai 25, 345-388 (1981).
MSC:
| 05C38 | Paths and cycles |
| 05C15 | Coloring of graphs and hypergraphs |
| 05B35 | Combinatorial aspects of matroids and geometric lattices |
