Über einige Lösungen der Funktionalgleichung \[ \varphi(x)\cdot \varphi(y)= \varphi(xy). \]
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Publication:5967679
DOI10.1007/BF02422947zbMATH Open46.0169.02WikidataQ56455944 ScholiaQ56455944MaRDI QIDQ5967679
Publication date: 1917
Published in: Acta Mathematica (Search for Journal in Brave)
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