Circle-uniqueness of Pythagorean orthogonality in normed linear spaces (Q2443802)

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Circle-uniqueness of Pythagorean orthogonality in normed linear spaces
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    Circle-uniqueness of Pythagorean orthogonality in normed linear spaces (English)
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    8 April 2014
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    Summary: We introduce the circle-uniqueness of Pythagorean orthogonality in normed linear spaces and show that Pythagorean orthogonality is circle-unique if and only if the underlying space is strictly convex. Further related results providing more detailed relations between circle-uniqueness of Pythagorean orthogonality and the shape of the unit sphere are also presented.
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    circle-uniqueness
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    Pythagorean orthogonality
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