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The classification of small weakly minimal sets I

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Book cover Classification Theory

Part of the book series: Lecture Notes in Mathematics ((LNM,volume 1292))

Abstract

Let T be a weakly minimal theory with fewer than

many countable models. Further suppose that T satisfies (S) for all finite A and weakly minimal p ε S(A), if p is non-isolated then p has finite multiplicity.

We prove a structure theorem for T which implies that T has countably many countable models. This proves Vaught's conjecture (in fact, Martin's conjecture) for a large class of weakly minimal theories.

This paper was written while the author held an NSF Postdoctoral Research Fellowship. Much of the research was done as an Assistant Professor at the University of Wisconsin-Milwaukee.

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References

  1. J.T. Baldwin, Fundamentals of stability theory, Springer-Verlag (to appear).

    Google Scholar 

  2. S. Buechler, The geometry of weakly minimal types, J. of Symbolic Logic, Vol.50,No.4 (Dec., 1985).

    Google Scholar 

  3. _____, Locally modular theories of finite rank, Annals of Pure and Applied Logic 30 (1986) 83–94.

    Article  MathSciNet  MATH  Google Scholar 

  4. _____, On non-trivial types of U-rank 1, J. of Symbolic Logic (to appear).

    Google Scholar 

  5. _____, Isolated types in a weakly minimal set, preprint,1986.

    Google Scholar 

  6. S. Shelah, L. Harrington, M. Makkai, A proof of Vaught's conjecture for ω-stable theoreis, Israel J. of Math., Vol.49, Nos. 1–3 (1984) 259–280.

    Article  MathSciNet  MATH  Google Scholar 

  7. D. Lascar, Définissabilite de types en théories de modèles, These de Doctorat D'Etat, Paris VII, 1975.

    Google Scholar 

  8. M. Makkai, A survey of basic stability theory, with particular emphasis on orthogonality and regular types, Israel J. of Math., Vol.49, Nos.1–3 (1984) 181–238.

    Article  MathSciNet  MATH  Google Scholar 

  9. A. Pillay, An introduction to stability theory, Oxford Univ. Press (1983).

    Google Scholar 

  10. A. Pillay, C. Steinhorn, A note on non-multidimensional superstable theories, J. of Symbolic Logic (to appear).

    Google Scholar 

  11. J. Saffe, On Vaught's conjecture for superstable theories, preprint (1982).

    Google Scholar 

  12. G. Sacks, Saturated model theory, W.A. Benjamin (1972).

    Google Scholar 

  13. S. Shelah, Classification theory and the number of non-isomorphic models, North-Holland (1978).

    Google Scholar 

  14. C. Steinhorn, On logics that express "there exist many indiscernibles", Doctoral dissertation, Univ. of Wisconsin-Madison (1980).

    Google Scholar 

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John T. Baldwin

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© 1987 Springer-Verlag

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Buechler, S. (1987). The classification of small weakly minimal sets I. In: Baldwin, J.T. (eds) Classification Theory. Lecture Notes in Mathematics, vol 1292. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0082231

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  • DOI: https://doi.org/10.1007/BFb0082231

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-18674-8

  • Online ISBN: 978-3-540-48049-5

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