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Title: Properly Σ 2 minimal degrees and 0″ complementation
Authors: Cooper, S.B.
Lewis, A.E.M.
Yang, Y. 
Keywords: Complementation
Minimal degrees
Issue Date: 2005
Citation: Cooper, S.B., Lewis, A.E.M., Yang, Y. (2005). Properly Σ 2 minimal degrees and 0″ complementation. Mathematical Logic Quarterly 51 (3) : 274-276. ScholarBank@NUS Repository.
Abstract: We show that there exists a properly Σ 2 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″. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Mathematical Logic Quarterly
ISSN: 09425616
DOI: 10.1002/malq.200410027
Appears in Collections:Staff Publications

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