Results 11 to 20 of about 6,353 (239)
Existentially prime Jonsson quasivarieties and their Jonsson spectra [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2022 This article is devoted to the study of Jonsson quasivarieties in a signature enriched with new predicate and constant symbols. New concepts of semantic Jonsson quasivariety and fragment-conservativeness of the center of the Jonsson theory are ...
A. R. Yeshkeyev +2 more
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On Jonsson varieties and quasivarieties [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 In this paper, new objects of research are identified, both from the standpoint of model theory and from the standpoint of universal algebra.
A.R. Yeshkeyev
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Existential prime convex Jonsson theories and their models
Қарағанды университетінің хабаршысы. Математика сериясы, 2016 This article is devoted to the study of the model - theoretic properties of special subclasses of Jonsson theories and their classes of models. Namely, introduce a new class of Jonsson theories is existentially prime convex Jonsson theories.
A.R. Yeshkeyev
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On categoricity questions for universal unars and undirected graphs under semantic Jonsson quasivariety [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2023 The article is devoted to the study of semantic Jonsson quasivarieties of universal unars and undirected graphs. The first section of the article consists of basic necessary concepts from Jonsson model theory.
A.R. Yeshkeyev +2 more
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Connection between the amalgam and joint embedding properties [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2022 The paper aims to study the model-theoretic properties of differentially closed fields of zero and positive characteristics in framework of study of Jonsson theories.
A.R. Yeshkeyev +2 more
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Properties of a stability for positive Jonsson theories
Қарағанды университетінің хабаршысы. Математика сериясы, 2015 Actually, we study the connections of the Δ-PM-theories with their centers in the enrich signature. The properties of various companions of some Δ-PM-theories and their connection with this theory are considered on the language of the central types of ...
A.R. Yeshkeyev
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Syntactic similarity of definable closures of Jonsson sets
Қарағанды университетінің хабаршысы. Математика сериясы, 2018 In the framework of the classification of the Jonsson theories concept of interpretability and admissibility in the language of the semantic triple of the Jonsson theory was considered.
G.A. Urken
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On Robinson spectrum of the semantic Jonsson quasivariety of unars [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2023 Given article is devoted to the study of semantic Jonsson quasivariety of universal unars of signature containing only unary functional symbol. The first section of the article consists of basic necessary concepts.
A.R. Yeshkeyev +3 more
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The admissibility and similarity of Jonsson theories
BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS, 2018 This work is related to the concepts of admissibility, interpretability, syntactic similarity and semantic similarity of Jonsson’s theories.This new concept generalize the notion of syntactic and semantic similarities for Jonsson theories. In the frame of study of preservation of the definable formulas subsets of Jonsson theory’s semantic model ...
A.R. Yeshkeyev, G.A. Urken
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Properties of hybrids of Jonsson theories
BULLETIN OF THE KARAGANDA UNIVERSITY-MATHEMATICS, 2018 This work is an introduction to the study of the properties of a new concept, as a hybrid of Jonsson theories. We define the basic concepts and framework for studying the model-theoretic properties of these concepts. The main goal of this paper is to study the model-theoretic properties of companions of hybrids of Jonsson theories.
A.R. Yeshkeyev, N.M. Mussina
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