×

Further refinements of the Jensen inequalities based upon samples with repetitions. (English) Zbl 1190.26031

Summary: We give a new refinement and extension of the well-known Jensen inequality for any mid-convex function \(f\) by arithmetic means of \(f\) evaluated at weighted arithmetic means of samples with repetitions. Our refinement provides the perfected and corrected version of the results given earlier by J. E. Pečarić and D. Svrtan [J. Math. Anal. Appl. 222, 365–373 (1998; Zbl 0912.26008)]. As generalizations, we also obtain two other refinements of Jensen’s inequality.

MSC:

26D15 Inequalities for sums, series and integrals
26E60 Means

Citations:

Zbl 0912.26008
Full Text: DOI

References:

[1] Pečarić, J. E.; Volenec, V., Interpolation of the Jensen inequality with some applications, Österreáich. Akad. Wiss. Math.-Natur. Kl. Sonderdruck Sitzungsber., 197, 463-467 (1988) · Zbl 0683.26008
[2] Gabler, S., Folgenkonvexe Funktionen, Manuscripta Math., 29, 29-47 (1979) · Zbl 0424.26006
[3] Mitrinović, D. S.; Pečarić, J. E., Unified treatment of some inequalities for mixed means, Österreáich. Akad. Wiss. Math.-Natur. Kl. Sonderdruck Sitzungsber., 197, 391-397 (1988) · Zbl 0683.26009
[4] Pečarić, J. E., Notes on convex functions, (Walter, W., Sixth International Conference on General Inequalities (Oberwolfach, December 9-15, 1990), vol. XXXIII: 505S (1992), Birkhäuser: Birkhäuser Basel) · Zbl 0516.26007
[5] Pečarić, J. E.; Svrtan, New refinements of the Jensen inequalities based on samples with repetitions, J. Math. Anal. Appl., 222, 235-273 (1998) · Zbl 0912.26008
[6] Zhang, Z.-H.; Wu, Y.-D.; Srivastava, H. M., Generalized Vandermonde determinants and mean values, Appl. Math. Comput., 202, 300-310 (2008) · Zbl 1154.15010
[7] Xiao, Z.-G.; Zhang, Z.-H.; Lokesha, V.; Tang, R., The two-parameter mean of \(n\) variables, Internat. Rev. Pure Appl. Math., 1, 1, 93-111 (2005) · Zbl 1266.26050
[8] Xiao, Z.-G.; Zhang, Z.-H.; Qi, F., A type of mean values of several positive numbers with two parameters, RGMIA Res. Rep. Collect.. RGMIA Res. Rep. Collect., Nonlinear Funct. Anal. Appl., 12, 2, 687-702 (2007), Article 11 · Zbl 1134.26009
[9] Hardy, G. H.; Littlewood, J. E.; Pólya, G., Inequalities (1952), Cambridge Univ. Press: Cambridge Univ. Press Cambridge, London, New York · Zbl 0047.05302
[10] Xiao, Z.-G.; Zhang, Z.-H., The Stolarsky mean of \(n\) positive numbers, J. Yueyang Normal Univ., 14, 4, 5-8 (2001), (in Chinese)
[11] Zhang, Z.-H., Three classes of new means in \(n + 1\) variables and their applications, J. Hunan Ed. Inst., 15, 5, 130-136 (1997), (in Chinese)
[12] Xiao, Z.-G.; Zhang, Z.-H., The inequalities \(G \leqq L \leqq I \leqq A\) in \(n\) variables, J. Inequal. Pure Appl. Math., 4, 2, 1-6 (2003), Article 39 (electronic) · Zbl 1051.26025
[13] Zhang, Z.-H.; Xiao, Z.-G.; Srivastava, H. M., A general family of weighted symmetric functions, Appl. Math. Lett., 22, 24-30 (2009) · Zbl 1163.26357
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.