Majorization Inequalities for n -Convex Functions with Applications to 3-Convex Functions

László Horváth ()
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László Horváth: Department of Mathematics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary

Mathematics, 2025, vol. 13, issue 20, 1-20

Abstract: In this paper, we study majorization-type inequalities for n -convex (specifically 3-convex) functions. Numerous papers deal with such integral inequalities, in which n -convex functions are defined on compact intervals and nonnegative measures are used in the integrals. The main goal of this paper is to formulate similar results for noncompact intervals and signed measures. We follow a well-known method often used for compact intervals: approximation of n -convex functions with simple n -convex functions. After some preliminary results, we present new approximation theorems, some of which extend classical results, while others are completely unique approximations. Then we obtain some novel majorization-type inequalities, which can be applied under more general conditions than those currently known. Finally, we illustrate the applicability of our results by answering problems from different areas: discrete majorization-type inequalities, specifically one-dimensional inequality of Sherman for n -convex functions; characterization of Steffensen–Popoviciu measures for nonnegative, continuous, and increasing 3-convex functions; Hermite–Hadamard-type inequalities for 3-convex functions.

Keywords: n-convex; majorization; signed measure; Hermite–Hadamard inequality (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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