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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Precomplete equivalence relations in dominical categories
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by Claudio Bernardi PDF
Proc. Amer. Math. Soc. 98 (1986), 124-134 Request permission

Abstract:

In this paper precomplete equivalence relations are introduced in dominical and recursion categories. After recalling definitions in $\S 2$, in $\S 3$ an analogue of Eršov’s Fixed Point Theorem is proved, as well as the recursive inseparability of two disjoint (unions of) equivalence classes. In $\S 4$ "morphisms" between equivalence relations are discussed, while $\S 5$ is devoted to the construction of an example (a new characterization of precomplete equivalence relations is also supplied in Lemma 5).
References
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  • Claudio Bernardi and Andrea Sorbi, Classifying positive equivalence relations, J. Symbolic Logic 48 (1983), no. 3, 529–538. MR 716612, DOI 10.2307/2273443
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Additional Information
  • © Copyright 1986 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 98 (1986), 124-134
  • MSC: Primary 03D75
  • DOI: https://doi.org/10.1090/S0002-9939-1986-0848889-9
  • MathSciNet review: 848889