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A Characterization of Starshaped Sets
Published online by Cambridge University Press: 20 November 2018
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In 1946 Krasnoselskii proved that if every n + 1 points of a compact connected set S in a Euclidean space En can see at least one point of S via S then S is starshaped [1]. This result was expanded by Robkin in 1965 [2]. In this paper, we characterize starshaped sets in En by a local arcwise convexity property relative to a point p.
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- Copyright © Canadian Mathematical Society 1977
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