Mathematica Bohemica, first online, pp. 1-8


Some new convex integral inequalities based on a modern result

Christophe CHESNEAU

Received July 5, 2025.   Published online January 23, 2026.

Abstract:  We present new convex integral inequalities based on a result by M. M. Iddrisu, C. A. Okpoti and K. A. Gbolagade (2014a), (2014b). Specifically, we examine cases in which one of the functions is monotonic and demonstrate that the aforementioned result can be improved under this condition. We also consider scenarios in which the derivative of one of the functions is convex. Complete proofs of all results are provided.
Keywords:  convex function; integral inequalities; Jensen integral inequality; primitives
Classification MSC:  26D15

PDF available at:  Institute of Mathematics CAS

References:
[1] E. F. Beckenbach: Convex functions. Bull. Am. Math. Soc. 54 (1948), 439-460. DOI 10.1090/S0002-9904-1948-08994-7 | MR 0024479 | Zbl 0041.38003
[2] R. Bellman: On the approximation of curves by line segments using dynamic programming. Commun. ACM 4 (1961), 284. DOI 10.1145/366573.366611 | Zbl 0100.12901
[3] J. Hadamard: Étude sur les propriétés des fonctions entières et en particulier d'une fonction considérée par Riemann. J. Math. Pures Appl. (4) 58 (1893), 171-215. (In French.)
[4] C. Hermite: Sur deux limites d'une intégrale définie. Mathesis 3 (1883), 82. (In French.)
[5] M. M. Iddrisu, C. A. Okpoti, K. A. Gbolagade: A proof of Jensen's inequality through a new Steffensen's inequality. Adv. Inequal. Appl. 2014 (2014), Article ID 29, 7 pages.
[6] M. M. Iddrisu, C. A. Okpoti, K. A. Gbolagade: Geometrical proof of new Steffensen's inequality and applications. Adv. Inequal. Appl. 2014 (2014), Article ID 23, 10 pages.
[7] J. L. W. V. Jensen: Om konvekse Funktioner og Uligheder imellem Middelvaerdier. Nyt Tidsskr. Math. B 16 (1905), 49-68. (In Danish.)
[8] J. L. W. V. Jensen: Sur les fonctions convexes et les inégalités entre les valeurs moyennes. Acta Math. 30 (1906), 175-193. (In French.) DOI 10.1007/BF02418571 | MR 1555027 | JFM 37.0422.02
[9] D. S. Mitrinović: Analytic Inequalities. Die Grundlehren der mathematischen Wissenschaften 165. Springer, Berlin (1970). DOI 10.1007/978-3-642-99970-3 | MR 0274686 | Zbl 0199.38101
[10] D. S. Mitrinović, J. E. Pečarić, A. M. Fink: Classical and New Inequalities in Analysis. Mathematics and Its Applications. East European Series 61. Kluwer Academic Publishers, Dordrecht (1993). DOI 10.1007/978-94-017-1043-5 | MR 1220224 | Zbl 0771.26009
[11] C. P. Niculescu: Convexity according to the geometric mean. Math. Inequal. Appl. 3 (2000), 155-167. DOI 10.7153/mia-03-19 | MR 1749293 | Zbl 0952.26006
[12] A. W. Roberts, D. E. Varberg: Convex Functions. Pure and Applied Mathematics 57. Academic Press, New York (1973). MR 0442824 | Zbl 0271.26009

Affiliations:   Christophe Chesneau, University of Caen-Normandie, Esplanade de la Paix, 14032 Caen, France, e-mail: christophe.chesneau@gmail.com


 
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