Some Remarks on Results Related to ?-Convex Function
DOI:
https://doi.org/10.5614/j.math.fund.sci.2021.53.1.5Keywords:
convex function, ?-convex function, ?-operator, divided difference of a function, finite difference of a functionAbstract
In the present article, we give new techniques for proving general identities of the Popoviciu type for discrete cases of sums for two dimensions using higher-order ?-divided difference. Also, integral cases are deduced by different methods for differentiable functions of higher-order for two variables. These identities are a generalization of various previously established results. An application for the mean value theorem is also presented.
References
Adnan, M., Khan, A. R. & Mehmood, F., Positivity of Sums, and Integrals for Higher Order ?-Convex and Completely Monotonic Functions, arXiv:1710.07182v1, [math.CA], 13 Oct 2017.
Berbarian, S.K., A First Course in Real Analysis, Springer-Verlag New York, Inc., 1994.
Ahmad, F. & Rana, M.A., Elements of Numerical Analysis, National Book Foundation, Allah wala Printers, Lahore, 1995.
Akhiezer, N.I., The Classical Moment Problem and Some Related Questions in Analysis, Oliver and Boyd, Edinburgh, 1965.
Halliday, D. & Resnick, R., Physics, Parts I and II, Wiley International Edition, John Wiley and Sons, Inc., Toppan Company, Ltd., Tokyo, Japan, 1966.
Jamal, S., Elementary Applied Statistics, Ahmed Academy, Urdu Bazar, Karachi, 1992.
Khan, A.R., General Inequalities for Generalized Convex Functions, (Unpublished doctoral dissertation), Abdus Salam School of Mathematical Sciences, GC University, Lahore, Pakistan, 2014.
Khan, A.R. & Mehmood, F., Some Remarks on Functions with Non-Decreasing Increments, Journal of Mathematical Analysis, 11(1), pp. 1-16, 2020.
Khan, A.R., Pe?ari?, J.E., Praljak, M. & Varo?anec, S., General linear Inequalities and Positivity/Higher Order Convexity, Monographs in inequalities 12, Element, Zagreb, pp. 269, 2017.
Khan, A.R., Pe?ari?, J.E. & Varo?anec, S., Popoviciu Type Characterization of Positivity of Sums and Integrals for Convex Functions of Higher Order, J. Math. Ineq., 7(2), pp. 195-212, 2013.
Mehmood, F., On Function with Nondecreasing Increments (unpublished doctoral dissertation), Department of Mathematics, University of Karachi, Karachi, Pakistan, 2019.
Milovanovi?, I. ?. & Pe?ari?, J. E., On Some Inequalities For ?-Convex Sequences of Higher Order, Period. Math. Hung., 17, pp. 21-24, 1986.
Mitrinovi?, D.S., Pe?ari?, J.E. & Fink, A.M., Classical and New Inequalities in Analysis, Kluwer Publishers Group, Dordrecht, 1993.
Pe?ari?, J. E., An Inequality for m-Convex Sequences, Mat. Vesnik, 5(18)(33), pp. 201-203, 1981.
Pe?ari?, J.E., Mesihovi?, B.A., Milovanovi?, I.?. & Stojanovi?, N., On Some Inequalities for Convex And ?-Convex Sequences of Higher Order II, Period. Math. Hung., 17(4), pp. 313-320, 1986.
Pe?ari?, J., Proschan, F. & Tong, Y.L., Convex Functions, Partial Orderings and Statistical Applications, Academic Press, New York, 1992.
Popoviciu, T., Introduction la Thrie des Diffences Diviss, Bull Math Soc Roumaine des Sciences, 42(1), pp. 65-78, 1940.
Popoviciu, T., Les Fonctions Convexes, Herman and Cie, Editeurs, Paris.
Spiegel, M.R., Theory and Problems of Vector Analysis and an introduction to Tensor Analysis, SI (Metric) Edition, Schaum?s Outline Series, McGraw-Hill Book Co., 1974.