Abstract
Let (S,d,G;α) be an α-simpie space with α > 1, and let B(p,r) be the set of all points q in S which are Menger-between p and r, together with p and r. In this paper, we obtain best possible upper and lower bounds for B(p,r). Furthermore, we show that if (S, ∥ · ∥) is a normed linear space and d(p,q) = ∥p − q∥, then B(p,r) is convex and p, r are on the boundary of B(p,r), but that this need not be the case when the metric d is not derived from a norm.
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© 1983 Springer Basel AG
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Alsina, C., Schweizer, B. (1983). Menger-Betweenness in α-Simple Spaces. In: Beckenbach, E.F., Walter, W. (eds) General Inequalities 3. International Series of Numerical Mathematics / Internationale Schriftenreihe zur Numerischen Mathematik / Série internationale d’Analyse numérique, vol 64. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-6290-5_24
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DOI: https://doi.org/10.1007/978-3-0348-6290-5_24
Publisher Name: Birkhäuser, Basel
Print ISBN: 978-3-0348-6292-9
Online ISBN: 978-3-0348-6290-5
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