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Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, 2011, Number 2, Pages 65–70
(Mi ivm7234)
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The lower neighborhoods problem in a space with closure and a finitary theorem
N. G. Parvatov Tomsk State University, Tomsk, Russia
Abstract:
In this paper we study conditions under which all finitely generated subsets in a space (i.e., in a set with the closure property) have finite lower neighborhoods. We prove the finitary property of such a space. In addition, we state the Birchoff and Frink finatary theorem more precisely. Considered questions have applications to discrete functional systems with superpositions.
Keywords:
space, closure property, closure property of finite character, completeness problem, expressibility problem, finitely generated classes, criterion system, lower neighborhood.
Received: 24.06.2009
Citation:
N. G. Parvatov, “The lower neighborhoods problem in a space with closure and a finitary theorem”, Izv. Vyssh. Uchebn. Zaved. Mat., 2011, no. 2, 65–70; Russian Math. (Iz. VUZ), 55:2 (2011), 56–60
Linking options:
https://www.mathnet.ru/eng/ivm7234 https://www.mathnet.ru/eng/ivm/y2011/i2/p65
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