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JOURNALS // Eurasian Mathematical Journal // Archive

Eurasian Math. J., 2015 Volume 6, Number 4, Pages 7–18 (Mi emj206)

This article is cited in 5 papers

On finite-dimensional Banach spaces in which suns are connected

A. R. Alimov

Department of Mechanics and Mathematics, M.V. Lomonosov Moscow State University, 1 Leninskie gory, Moscow 119991 Russia

Abstract: The present paper extends and refines some results on the connectedness of suns in finite-dimensional normed linear spaces. In particular, a sun in a finite-dimensional $(BM)$-space is shown to be monotone path-connected and having a continuous multiplicative (additive) $\varepsilon$-selection from the operator of nearly best approximation for any $\varepsilon>0$. New properties of $(BM)$-space are put forward.

Keywords and phrases: sun, strict sun, bounded connectedness, $(BM)$-space, contractibility, nearly best approximation, $\varepsilon$-selection, Menger connectedness, monotone path-connectedness.

MSC: 41A65

Received: 06.09.2015

Language: English



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