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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)


Turing incomparability in Scott sets

Authors: Antonín Kucera and Theodore A. Slaman
Journal: Proc. Amer. Math. Soc. 135 (2007), 3723-3731
MSC (2000): Primary 03D28
Published electronically: June 22, 2007
MathSciNet review: 2336589
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Abstract | References | Similar Articles | Additional Information

Abstract: For every Scott set $ \mathcal F$ and every nonrecursive set $ X$ in $ \mathcal F$, there is a $ Y \in \mathcal F$ such that $ X$ and $ Y$ are Turing incomparable.

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Additional Information

Antonín Kucera
Affiliation: Department of Theoretical Computer Science and Mathematical Logic, Faculty of Mathematics and Physics, Charles University, Malostranské nám. 25, 118 00 Praha 1, Czech Republic

Theodore A. Slaman
Affiliation: Department of Mathematics, The University of California, Berkeley, Berkeley, California 94720-3840

PII: S 0002-9939(07)08871-5
Keywords: Scott set, Turing degree, $K$-trivial, low for random
Received by editor(s): February 20, 2006
Received by editor(s) in revised form: August 14, 2006
Published electronically: June 22, 2007
Additional Notes: The first author was partially supported by the Research Project of the Ministry of Education of the Czech Republic MSM0021620838
The second author was partially supported by NSF grant DMS-0501167.
Communicated by: Julia Knight
Article copyright: © Copyright 2007 American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication.

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