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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2021 Volume 197, Pages 95–100 (Mi into865)

This article is cited in 2 papers

Hewitt–Nachbin number of the space of thin complete linked systems

F. G. Mukhamadiev

National University of Uzbekistan named after Mirzo Ulugbek

Abstract: In this paper, we examine the Hewitt–Nakhbin number $q$ of the space of thin complete linked systems $N^{*}X$ of a topological space $X$. We prove that the Hewitt–Nakhbin number $q$ of the space of thin complete systems $N^{*}X$ of a topological space $X$ does not exceed the density of the topological space $X$, i.e., $q(N^{*}X) \le d(X)$.

Keywords: density, Hewitt–Nachbin number, space of complete linked systems.

UDC: 517.12

MSC: 54B20, 54A25

DOI: 10.36535/0233-6723-2021-197-95-100



© Steklov Math. Inst. of RAS, 2025