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THE SCHUR CONVEXITY OF GINI MEAN VALUES IN THE SENSE OF HARMONIC MEAN 被引量:4

THE SCHUR CONVEXITY OF GINI MEAN VALUES IN THE SENSE OF HARMONIC MEAN
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摘要 We prove that the Gini mean values S(a,b; x,y) are Schur harmonic convex with respect to (x,y)∈(0,∞)×(0,∞) if and only if (a, b) ∈{(a, b):a≥0,a ≥ b,a+b+1≥0}∪{(a,b):b≥0,b≥a,a+b+1≥0} and Schur harmonic concave with respect to (x,y) ∈ (0,∞)×(0,∞) if and only if (a,b)∈{(a,b):a≤0,b≤0,a|b|1≤0}. We prove that the Gini mean values S(a,b; x,y) are Schur harmonic convex with respect to (x,y)∈(0,∞)×(0,∞) if and only if (a, b) ∈{(a, b):a≥0,a ≥ b,a+b+1≥0}∪{(a,b):b≥0,b≥a,a+b+1≥0} and Schur harmonic concave with respect to (x,y) ∈ (0,∞)×(0,∞) if and only if (a,b)∈{(a,b):a≤0,b≤0,a|b|1≤0}.
出处 《Acta Mathematica Scientia》 SCIE CSCD 2011年第3期1103-1112,共10页 数学物理学报(B辑英文版)
基金 Supported by the NSFC (11071069) the NSF of Zhejiang Province (D7080080 and Y7080185) the Innovation Team Foundation of the Department of Education of Zhejiang Province (T200924)
关键词 Gini mean values Schur convex Schur harmonic convex Gini mean values Schur convex Schur harmonic convex
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同被引文献28

  • 1CHU YuMing 1, XIA WeiFeng 1 & ZHAO TieHong 2 1 Department of Mathematics, Huzhou Teachers College, Huzhou 313000, China,2 Institut de Mathmatiques, Universit Pierre et Marie Curie, Paris F-75252, France.Schur convexity for a class of symmetric functions[J].Science China Mathematics,2010,53(2):465-474. 被引量:6
  • 2石焕南,张鉴,徐坚.一类积分不等式的控制证明[J].首都师范大学学报(自然科学版),2004,25(4):11-13. 被引量:3
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  • 10Shi Huannan. Two Schur-convex functions related to Hadamard-type integral inequalities [J]. Publicationes Mathematicae Debrecen, 2011,78(2):393-403.

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