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On the Quotient Structure of Computably Enumerable Degrees Modulo the Noncuppable Ideal

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Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 3959))

Abstract

We show that minimal pairs exist in the quotient structure of \(\mathcal{R}\) modulo the ideal of noncuppable degrees.

1991 Mathematics Subject Classification. 03D25.

A. Li is partially supported by National Distinguished Young Investigator Award no. 60325206 (China). Y. Yang is partially supported by NUS Academic Research Grant R-146-000-078-112 “Enumerability and Reducibility” (Singapore) and R-252-000-212-112. G. Wu is partially supported by a start-up grant from Nanyang Technological University (Singapore). All three authors are partially supported by NSFC grant no. 60310213 “New Directions in Theory and Applications of Models of Computation” (China). The work was done partially while the authors were visiting the Institute for Mathematical Sciences, National University of Singapore in 2005. The visit was supported by the Institute.

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References

  1. Ambos-Spies, K., Jockusch Jr., C.G., Shore, R.A., Soare, R.I.: An algebraic decomposition of the recursively enumerable degrees and the coincidence of several degree classes with the promptly simple degrees. Trans. Amer. Math. Soc. 281, 109–128 (1984)

    Article  MATH  MathSciNet  Google Scholar 

  2. Jockusch Jr., C.G., Li, A., Yang, Y.: A join theorem for the computably enumerable degrees. Trans. Amer. Math. Soc. 356(7), 2557–2568(electronic) (2004)

    Google Scholar 

  3. Miller, D.: High recursively enumerable degrees and the anticupping property. In: Logic Year 1979–1980: University of Connecticut, pp. 230–245 (1981)

    Google Scholar 

  4. Nies, A.: Parameter definability in the recursively enumerable degrees. J. Math. Log. 3(1), 37–65 (2003)

    Article  MATH  MathSciNet  Google Scholar 

  5. Schwarz, S.: The quotient semilattice of the recursively enumerable degrees modulo the cappable degrees. Trans. Amer. Math. Soc. 283(1), 315–328 (1984)

    Article  MATH  MathSciNet  Google Scholar 

  6. Yi, X.: Extension of embeddings on the recursively enumerable degrees modulo the cappable degrees. In: Computability, enumerability, unsolvability. London Math. Soc. Lecture Note Ser., vol. 224, pp. 313–331. Cambridge Univ. Press, Cambridge (1996)

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  7. Yu, L., Yang, Y.: On the definable ideal generated by nonbounding c.e. degrees. J. Symbolic Logic 70(1), 252–270 (2005)

    Article  MATH  MathSciNet  Google Scholar 

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© 2006 Springer-Verlag Berlin Heidelberg

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Li, A., Wu, G., Yang, Y. (2006). On the Quotient Structure of Computably Enumerable Degrees Modulo the Noncuppable Ideal. In: Cai, JY., Cooper, S.B., Li, A. (eds) Theory and Applications of Models of Computation. TAMC 2006. Lecture Notes in Computer Science, vol 3959. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11750321_69

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  • DOI: https://doi.org/10.1007/11750321_69

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-34021-8

  • Online ISBN: 978-3-540-34022-5

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