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JOURNALS // Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports] // Archive

Sib. Èlektron. Mat. Izv., 2015 Volume 12, Pages 432–435 (Mi semr599)

This article is cited in 1 paper

Real, complex and functional analysis

On upper topological limit of family of vector subspaces of codimension $k$

K. V. Storozhukab

a Novosibirsk State University, Pirogova str., 2, 630090, Novosibirsk, Russia
b Sobolev Institute of Mathematics, pr. Koptyuga, 4, 630090, Novosibirsk, Russia

Abstract: Let $\{L_\alpha\mid \alpha\in I\}$ be an infinite family of subspaces in a topological vector space $X$ the codimension of each of which is at most $k$. We prove that there exists a subspace $L\subset X$, $\operatorname{codim} L\leq k$, such that every $x\in L$ is a limit point of some family $\{l_\alpha\in L_\alpha\}$.

Keywords: upper topological limit.

UDC: 517.982.2

MSC: 46A15

Received July 5, 2015, published July 20, 2015

DOI: 10.17377/semi.2015.12.036



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