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Comparing DNR and WWKL

Published online by Cambridge University Press:  12 March 2014

Klaus Ambos-Spies ,
Bjørn Kjos-Hanssen ,
Steffen Lempp  and
Theodore A. Slaman
Klaus Ambos-Spies
Affiliation:
Mathematisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany, E-mail: [email protected]
Bjørn Kjos-Hanssen
Affiliation:
Department of Mathematics, University of Connecticut, Storrs, Connecticut 06269-3009, USA, E-mail: [email protected]
Steffen Lempp
Affiliation:
Department of Mathematics, University of Wisconsin, Madison, Wisconsin 53706-1388, USA, E-mail: [email protected]
Theodore A. Slaman
Affiliation:
Department of Mathematics, The University of California, Berkeley, California 94720-3840, USA, E-mail: [email protected]
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Abstract.

In Reverse Mathematics, the axiom system DNR. asserting the existence of diagonally non-recursive functions, is strictly weaker than WWKL0 (weak weak König's Lemma).

Keywords

reverse mathematicsdiagonally non-recursive functionsTuring degrees
Type
Research Article
Information
The Journal of Symbolic Logic , Volume 69 , Issue 4 , December 2004 , pp. 1089 - 1104
Copyright
Copyright © Association for Symbolic Logic 2004

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References

REFERENCES

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