A characterization of the ball
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Publication:5511975
DOI10.4064/cm-13-2-235-246zbMath0137.41603OpenAlexW1012671404MaRDI QIDQ5511975
Publication date: 1965
Published in: Colloquium Mathematicum (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.4064/cm-13-2-235-246
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