Russian Mathematics

, Volume 62, Issue 11, pp 76–80 | Cite as

On Distributions of Countable Models of Disjoint Unions of Ehrenfeucht Theories

  • S. V. Sudoplatov


We describe Rudin–Keisler preorders and distribution functions of numbers of limit models for disjoint unions of Ehrenfeucht theories. We also find decomposition formulas for these distributions.


disjoint union of theories Ehrenfeucht theory distribution of countable models decomposition formula 


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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  1. 1.Sobolev Institute of MathematicsSiberian Branch of RASNovosibirskRussia
  2. 2.Novosibirsk State Technical UniversityNovosibirskRussia
  3. 3.Novosibirsk State UniversityNovosibirskRussia

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