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Prime models of theories of computable linear orderings. (English) Zbl 0974.03040

In his book: Linear orderings [Academic Press, New York (1982; Zbl 0488.04002)], J. G. Rosenstein asked if there was a complete theory of linear orderings with a computable model and a prime model, but no computable prime model. The author uses Khisamiev’s technique of “limitwise monotonic” functions, together with coding a construction from the literature (specifically, R. J. Coles, R. Downey and B. Khoussainov [Order 14, 107-124 (1998; Zbl 0915.03040)]) to give an affirmative answer to this longstanding question.

MSC:

03D45 Theory of numerations, effectively presented structures
06A05 Total orders
03C57 Computable structure theory, computable model theory
03C50 Models with special properties (saturated, rigid, etc.)
03C65 Models of other mathematical theories
Full Text: DOI

References:

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[2] Richard J. Coles, Rod Downey, and Bakhadyr Khoussainov, On initial segments of computable linear orders, Order 14 (1997/98), no. 2, 107 – 124. · Zbl 0915.03040 · doi:10.1023/A:1006031314563
[3] R. Downey and J. B. Remmel, Questions in computable algebra and combinatorics, in P. Cholak, S. Lempp, M. Lerman, and R. Shore , Computability Theory and its Applications: Current Trends and Open Problems, Contemporary Mathematics, vol. 257, American Mathematical Society, Providence, RI, 2000, pp. 95-125. CMP 2000:16 · Zbl 0980.03045
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