Optimal Lehmer Mean Bounds for the Toader Mean

Optimal Lehmer Mean Bounds for the Toader Mean
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DOI:
10.1007/s00025-010-0090-9
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发表时间:
2012-06-01
影响因子:
2.2
通讯作者:
Wang, Miao-Kun
Wang, Miao-Kun
中科院分区:
数学3区
文献类型:
--
作者:
Chu, Yu-Ming;Wang, Miao-Kun

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找到了最大值p和最小值q使得二重不等式L(p)(a,B)< T(a,B)< L(q)(a,B)对所有a,B > 0且a不等于B成立,并给出了第二类完全椭圆积分的一个新的上界.这里和L(p)(a,B)=(a(p+1)+ B(p+1))/(a(p)+ B(p))分别表示两个正数a和B的Toader和p次Lehmer平均。
We find the greatest value p and least value q such that the double inequality L (p) (a, b) < T(a, b) < L (q) (a, b) holds for all a, b > 0 with a not equal b, and give a new upper bound for the complete elliptic integral of the second kind. Here and L (p) (a, b) = (a (p+1) + b (p+1))/(a (p) + b (p) ) denote the Toader and p-th Lehmer means of two positive numbers a and b, respectively.