A note on Jensen's inequality for 2D-convex functions

Khuram Ali Khan, Constantin P. Niculescu, Josip Pečarić


Recently, M. Bencze, C. P. Niculescu and F. Popovici [2]
have introduced a notion of 2-dimensional convexity for functions
of several variables, together with an analogue of Jensen's
inequality. We present here an alternative argument, based on a
result due to D. D. Adamović and P. M. Vasić [1].

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