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Counting word-trees

Published online by Cambridge University Press:  18 May 2009

J. M. O. Mitchell
Affiliation:
Department of Mathematics, University of Stirling
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In his recent study of free inverse semigroups, Munn [2] introduced and used extensively the concept of a word-tree. In this note the number of such trees is found.

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 1974

References

REFERENCES

1.Harary, F., Graph theory (Reading, Mass., 1969).CrossRefGoogle Scholar
2.Munn, W. D., Free inverse semigroups, Proc. London Math. Soc.; to appear.Google Scholar