Konvexe und konkave Funktionen (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Konvexe und konkave Funktionen" in German language version.

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doi.org

tripod.com

jeff560.tripod.com

  • Earliest Known Uses of Some of the Words of Mathematics, 28. Juli 2006: A. Guerraggio and E. Molho write, „The first modern formalization of the concept of convex function appears in J. L. W. V. Jensen Om konvexe funktioner og uligheder mellem midelvaerdier, Nyt Tidsskr. Math. B 16 (1905), S. 49–69. Since then, at first referring to Jensen’s convex functions, then more openly, without needing any explicit reference, the definition of convex function becomes a standard element in calculus handbooks.“ („The Origins of Quasi-concavity: a Development between Mathematics and Economics“, Historia Mathematica, 31, (2004), 62–75.)

wikisource.org

de.wikisource.org

  • Otto Hölder: Ueber einen Mittelwerthssatz. In: Nachrichten von der Königl. Gesellschaft der Wissenschaften und der Georg-Augusts-Universität zu Göttingen. Aus dem Jahre 1889., Nr. 1-21. Dieterichsche Verlags-Buchhandlung, Göttingen 1889, S. 38 ff. (in Wikisource [abgerufen am 24. März 2012]).

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