A harmonic mean inequality for the gamma function
β Scribed by Horst Alzer
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 123 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0377-0427
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β¦ Synopsis
We prove that for all positive real numbers x ~ 1, the harmonic mean of (F(x)) 2 and (F(1/x)) 2 is greater than 1. This refines a result of Gautschi (1974).
π SIMILAR VOLUMES
A generalization of the arithmetic-harmonic-mean inequality is presented, naaking use of the concept of the parallel sum of matrices.
Laforgia (1984) obtained some inequalities of the type according to the values of the positive parameters ~ and 2, valid for every non-negative real value of k, or at least for k greater than or equal than a k o depending on a and 2. In this paper a complete analysis of the problem is carried ou
We propose a method, based on logarithmic convexity, for producing sharp Ε½ . Ε½ . bounds for the ratio β« x q β€ rβ« x . As an application, we present an inequality that sharpens and generalizes inequalities due to Gautschi, Chu, Boyd, Lazarevic-ΔΉupas ΒΈ, and Kershaw.