J. Pecaric et D. Svrtan, NEW REFINEMENTS OF THE JENSEN INEQUALITIES BASED ON SAMPLES WITH REPETITIONS, Journal of mathematical analysis and applications, 222(2), 1998, pp. 365-373
In this paper we give a refinement of the Jensen inequality for any mi
d-convex function f by arithmetic means of f evaluated at arithmetic m
eans of samples with repetitions. The case of samples without repetiti
ons was treated by J. E. Pecaric and V. Volenec (Osterreich. Akad. Wis
s. Math.-Natur. Kl. Sonderdruck Sitzungsber. 197, 1988, 463-467). (C)
1998 Academic Press.