Results 21 to 30 of about 6,353 (239)

An essential base of the central types of the convex theory

Қарағанды университетінің хабаршысы. Математика сериясы, 2021
In this paper, we consider the model-theoretical properties of the essential base of the central types of convex theory. Also shows the connection between the center and Jonsson theory in permissible enrichment signatures.
A.R. Yeshkeyev, M.T. Omarova
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Similarities of Jonsson spectra’s classes

Қарағанды университетінің хабаршысы. Математика сериясы, 2023
The study of syntactic and semantic properties of a first-order language, generally speaking, for incomplete theories, is one of the urgent problems of mathematical logic.
A.R. Yeshkeyev, O.I. Ulbrikht, G.A. Urken   +2 more
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Forking and independence for fragments of Jonsson sets

Қарағанды университетінің хабаршысы. Математика сериясы, 2018
The concept of independence plays a very important role in Model Theory for classification of a fixed complete theory. In this paper, we study the Jonsson theories, which, generally speaking, are not complete.
O.I. Ulbrikht
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Method of the rheostat for studying properties of fragments of theoretical sets

Қарағанды университетінің хабаршысы. Математика сериясы, 2020
In this article discusses the model-theoretical properties of fragments of theoretical sets and the rheostat method. These two concepts: theoretical set and rheostat are new. The study of this topic in the framework of the study of Jonsson theories, the
A.R. Yeshkeyev
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Companions of the fragments in the Jonsson enrichment

Қарағанды университетінің хабаршысы. Математика сериясы, 2017
In this article we consider the properties of central types for the existentially prime strongly convex Jonsson theories in some extension. This class of theories is a subclass of a broad class of Jonsson theories.
A.R. Yeshkeyev
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Some properties of Morly rank over Jonsson sets

Қарағанды университетінің хабаршысы. Математика сериясы, 2016
This article introduced and discussed the concepts of minimal Jonsson sets and respectively strongly minimal Jonsson sets. On this basis, it introduces the concept of the independence of special subsets of existentially closed submodel of the semantic ...
A.R. Yeshkeyev
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On closure operators of Jonsson sets

Қарағанды университетінің хабаршысы. Математика сериясы
The work is related to the study of the model-theoretic properties of Jonsson theories, which, generally speaking, are not complete. In the article, on the Boolean of Jonsson subsets of the semantic model of some fixed Jonsson theory, the concept of the
Olga Ulbrikht
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Small models of hybrids for special subclasses of Jonsson theories

BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS, 2019
This article presents the result related to the model - theoretic properties of special subsets of the semantic model of some fixed Jonsson theory. The specialty of these sets is due to their definability and closure. Further, we consider fragments of these sets and create a hybrid of these fragments from them.
A.R. Yeshkeyev, N.M. Mussina
openaire   +4 more sources

On lattice of existential formulas for fragment of Jonsson set

Қарағанды университетінің хабаршысы. Математика сериясы, 2015
This paper its content associated with the study of model - theoretic properties of Jonsson theories and their semantic models. In particular, considering Jonsson sets concerning of their definable circuit described fragments and their relationship to ...
A.R. Yeshkeyev, O.I. Ulbrikht
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The property of independence for Jonsson sets

Қарағанды университетінің хабаршысы. Математика сериясы, 2016
The studies carried out in this article are connected with the description of model - theoretic properties of some, generally speaking, incomplete classes of theories that make a subclass of inductive theories.
A.R. Yeshkeyev
doaj   +3 more sources