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关于广义平均SCHUR-凸性的另一个注记

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Mathematical Inequalities & Applications Volume 9, Number 2 (2006), 219–224.


AN ALTERNATIVE NOTE ON THE SCHUR–CONVEXITY OF THE EXTENDED MEAN VALUES


HUAN-NAN SHI, SHAN-HE WU AND FENG QI


Abstract. he monotonicity, the Schur-convexity and the Schur-geometrically convexity with variables $(x,y)$  in $\mathbb{R}_{++}^{2}$  for fixed $a$ of the generalized exponent mean $I_a (x,y)$ is proved. Besides, the monotonicity with parameters $a$ in $\mathbb{R}$ for fixed $(x,y)$ of $I_a (x,y)$ is discussed by using the hyperbolic composite function. Furthermore, some new inequalities are obtained.


Mathematics subject classification (2000): 26B25, 26E60, 26D07, 26D20.


Key words and phrases: Schur-convexity, extended mean values.


AN ALTERNATIVE NOTE ON THE SCHUR–CONVEXITY.pdf




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