### Comparing DNR and WWKL

Klaus Ambos-Spies, Bjørn Kjos-Hanssen, Steffen Lempp, and Theodore A. Slaman
Source: J. Symbolic Logic Volume 69, Issue 4 (2004), 1089-1104.

#### 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).

First Page:
Primary Subjects: 03D28, 03F35
Secondary Subjects: 03F60
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Permanent link to this document: http://projecteuclid.org/euclid.jsl/1102022212
Digital Object Identifier: doi:10.2178/jsl/1102022212
Zentralblatt MATH identifier: 1076.03039
Mathematical Reviews number (MathSciNet): MR2135656

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