On the functional inequality \(f(x+y)+f(xy){\geq}f(x)+f(y)+f(x)f(y)\)

DOI10.1007/BF01855887zbMath0788.39007OpenAlexW2021384877MaRDI QIDQ1801348

Claus Hammer

Publication date: 26 May 1994

Published in: Aequationes Mathematicae (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/137530

zbMATH Keywords

functional inequalitydifferentiable solution

Mathematics Subject Classification ID

Systems of functional equations and inequalities (39B72)

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