A simple proof of inequalities of integrals of composite functions ✩

In this paper we give a simple proof of inequalities of integrals of functions which are the composition of nonnegative continuous convex functions on a vector space Rm and vector-valued functions in a weakly compact subset of a Banach vector space generated by m L p μ-spaces for 1 p < +∞. Also, the same inequalities hold if these vector-valued functions are in a weakly* compact subset of a Banach vector space generated by m L∞μ -spaces instead. © 2006 Elsevier Inc. All rights reserved