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- Title
ON BOUNDS OF LOGARITHMIC MEAN AND MEAN INEQUALITY CHAIN.
- Authors
FURUICHI, SHIGERU; AMLASHI, MEHDI EGHBALI
- Abstract
An upper bound of the logarithmic mean is given by a convex combination of the arithmetic mean and the geometric mean. In addition, a lower bound of the logarithmic mean is given by a geometric bridge of the arithmetic mean and the geometric mean. In this paper, we study the bounds of the logarithmic mean. We give operator inequalities and norm inequalities for the fundamental inequalities on the logarithmic mean. We give monotonicity of the parameter for the unitarily invariant norm of the Heron mean, and give its optimality as the upper bound of the unitarily invariant norm of the logarithmic mean. We study the ordering of the unitarily invariant norms for the Heron mean, the Heinz mean, the binomial mean and the Lehmer mean. Finally, we give a new mean inequality chain as an application of the point--wise inequality.
- Subjects
ARITHMETIC mean; HERONS; MATRIX inequalities
- Publication
Mathematical Inequalities & Applications, 2024, Vol 27, Issue 2, p379
- ISSN
1331-4343
- Publication type
Article
- DOI
10.7153/mia-2024-27-27