Schur Power Convexity of the Daróczy Means
نویسنده
چکیده
In this paper, the Schur convexity is generalized to Schur f -convexity, which contains the Schur geometrical convexity, harmonic convexity and so on. When f : R+ →R is defined by f (x) = (xm−1)/m if m = 0 and f (x) = lnx if m = 0 , the necessary and sufficient conditions for f -convexity (is called Schur m -power convexity) of Daróczy means are given, which improve, generalize and unify Shi et al.’s results. Mathematics subject classification (2010): 26D15, 26D99, 26B25.
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