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Incompatible extensions of combinatorial functions

Published online by Cambridge University Press:  12 March 2014

Erik Ellentuck
Erik Ellentuck*
Affiliation:
University of California, Berkeley, California 94720
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Abstract

We find necessary and sufficient conditions for compatibility of the Myhill and the Nerode extensions of a combinatorial function to the isols.

Keywords

Nonrecursive combinatorial function

Information

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 48 , Issue 3 , September 1983, pp. 752 - 755
Copyright
Copyright © Association for Symbolic Logic 1983

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References

REFERENCES

[1]Ellentuck, E., Nonrecursive relations among the isols, Proceedings of the American Mathematical Society, vol. 36 (1972), pp. 239–245.CrossRefGoogle Scholar
[2]Ellentuck, E., The positive properties of isolic integers, this Journal, vol. 37 (1972), pp. 114–132.Google Scholar
[3]McLaughlin, T. G., On the divergence of extension procedures in isol theory, Proceedings of the American Mathematical Society, vol. 83 (1981), pp. 769–773.CrossRefGoogle Scholar
[4]Myhill, J., Recursive equivalence types and combinatorial functions, Bulletin of the American Mathematical Society, vol. 64 (1958), pp. 373–376.CrossRefGoogle Scholar
[5]Nerode, A., Extensions to isols, Annals of Mathematics, vol. 73 (1961), pp. 362–403.CrossRefGoogle Scholar