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On Kelly's congruence theorem for trees

Published online by Cambridge University Press:  24 October 2008

J. A. Bondy
Affiliation:
Mathematical Institute, Oxford

Extract

A graph G is a pair (V{G), E(G)); V(G) is the set of vertices of G, and E(G) the set of edges of G; E(G) is a subset of the Cartesian product V(G) × V(G) (all pairs (υi, υj) where υiV(G), υjV(G)). If υ is a vertex of G we shall write υ ∈ G. The graph-theoretic terminology used in this paper is that of Berge (1). We shall consider only graphs which are finite, undirected, and without loops.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1969

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References

REFERENCES

(1)Berge, C.The theory of graphs. (Methuen; London, 1962).Google Scholar
(2)Harary, F. & Palmer, E.The reconstruction of a tree from its maximal subtrees. Canad. J. Math. 18 (1966), 803810.CrossRefGoogle Scholar
(3)Kelly, P. J.A congruence theorem for trees. Pacific J. Math. 7 (1957), 961968.CrossRefGoogle Scholar
(4)Kö;nig, D.Theorie der endlichen und unendlichen graphen, p. 65 (Liepzig, 1936, reprinted New York, 1950).Google Scholar
(5)Ulam, S. M.A collection of mathematical problems, p. 29 (Wiley; New York, 1960).Google Scholar