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Properly Σ2 minimal degrees and 0″ complementation

Cooper, S. Barry, Lewis-Pye, Andrew and Yang, Yue (2005) Properly Σ2 minimal degrees and 0″ complementation. Mathematical Logic Quarterly, 51 (3). pp. 274-276. ISSN 0942-5616

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Identification Number: 10.1002/malq.200410027


We show that there exists a properly Σ2 minimal (Turing) degree b, and moreover that b can be chosen to join with 0′ to 0″ – so that b is a 0″ complement for every degree a such that 0′ ≤ a < 0″.

Item Type: Article
Official URL:
Additional Information: © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Divisions: Mathematics
Subjects: Q Science > QA Mathematics
Date Deposited: 06 Aug 2013 11:10
Last Modified: 16 May 2024 00:25

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