A characterization of the inner product spaces involving trigonometry (Q1947144)

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scientific article; zbMATH DE number 6153483
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English
A characterization of the inner product spaces involving trigonometry
scientific article; zbMATH DE number 6153483

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    A characterization of the inner product spaces involving trigonometry (English)
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    12 April 2013
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    normed spaces
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    inner product spaces
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