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The Schur-convexity of Stolarsky and Gini means. (English) Zbl 1140.26307
Summary: We study in a unitary way the Schur-convexity or concavity of the Stolarsky and Gini means $$D_{a,b} (x, y)$$ and $$S_{a,b} (x, y)$$, for fixed $$x, y > 0$$, $$x \neq y$$.

##### MSC:
 26D15 Inequalities for sums, series and integrals
##### Keywords:
Stolarsky and Gini means; Schur convexity
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