Results 11 to 20 of about 81,048 (231)
Existentially positive Mustafin theories of S-acts over a group [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2022 The paper is connected with the study of Jonsson spectrum notion of the fixed class of models of Sacts signature, assuming a group as a monoid of S-acts.
A.R. Yeshkeyev +2 more
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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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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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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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Geometry of strongly minimal hybrids of fragments of theoretical sets [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2023 In this article, strongly minimal geometries of fragment hybrids are considered. In this article, a new concept was introduced as a family of Jonsson definable subsets of the semantic model of the Jonsson theory T, denoted by JDef(CT).
M.T. Kassymetova, N.M. Mussina
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Independence and simplicity in Jonsson theories with abstract geometry
Sibirskie Elektronnye Matematicheskie Izvestiya, 2021 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yeshkeyev, Aibat Rafhatovich +2 more
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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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Small models of convex fragments of definable subsets
Қарағанды университетінің хабаршысы. Математика сериясы, 2020 This article discusses the problems of that part of Model Theory that studies the properties of countable models of inductive theories with additional properties, or, in other words, Jonsson theories.
A.R. Yeshkeyev, N.V. Popova
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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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