Schur-convexity and Schur-geometrically concavity of Gini means
The Schur-convexity and the Schur-geometric convexity with variables ( x , y ) ? R + + 2 for fixed (s,t) ( s , t ) of Gini means G(r,s;x,y) G ( r , s ; x , y ) are discussed. Some new inequalities are obtained.
schur-convexity schur-geometric concavity gini means inequalities stolarsky means