Results 1 to 10 of about 2,051 (212)

Harmonic analysis and mean field theory [PDF]

open access: yesJournal of High Energy Physics, 2019
We review some aspects of harmonic analysis for the Euclidean conformal group, including conformally-invariant pairings, the Plancherel measure, and the shadow transform.
Denis Karateev   +2 more
doaj   +5 more sources

Average Hazard as Harmonic Mean

open access: yesPharmaceutical Statistics
ABSTRACTA new measure was recently developed in the context of survival analysis that can be interpreted as a weighted arithmetic mean of the hazards with the survival function as the weight. However, when the average hazard is desired, it is more appropriate to use the harmonic mean rather than the arithmetic mean.

exaly   +3 more sources

The arithmetic-harmonic mean [PDF]

open access: yesMathematics of Computation, 1984
Consider two sequences generated by \[ a n
Foster, D. M. E., Phillips, G. M.
openaire   +1 more source

Stochastic Order and Generalized Weighted Mean Invariance

open access: yesEntropy, 2021
In this paper, we present order invariance theoretical results for weighted quasi-arithmetic means of a monotonic series of numbers. The quasi-arithmetic mean, or Kolmogorov–Nagumo mean, generalizes the classical mean and appears in many disciplines ...
Mateu Sbert   +3 more
doaj   +1 more source

Two Sharp Inequalities for Power Mean, Geometric Mean, and Harmonic Mean

open access: yesJournal of Inequalities and Applications, 2009
For p∈R, the power mean of order p of two positive numbers a and b is defined by Mp(a,b)=((ap+bp)/2)1/p,p≠0,  and  Mp(a,b)=ab,   p=0.
Wei-Feng Xia, Yu-Ming Chu
doaj   +2 more sources

Digital image contrast assessment based on the Weibull distribution parameters

open access: yesСистемный анализ и прикладная информатика, 2021
The goal of the studies described in the paper is to find a quantitative assessment that maximally correlates with the subjective assessment of the contrast image quality in the absence of reference image.
Y. I. Golub, F. V. Starovoitov
doaj   +1 more source

On approximating the quasi-arithmetic mean

open access: yesJournal of Inequalities and Applications, 2019
In this article, we prove that the double inequalities α1[7C(a,b)16+9H(a,b)16]+(1−α1)[3A(a,b)4+G(a,b)4]
Tie-Hong Zhao   +3 more
doaj   +1 more source

Sharp two-parameter bounds for the identric mean

open access: yesJournal of Inequalities and Applications, 2018
For t∈[0,1/2] $t\in [0,1/2]$ and s≥1 $s\ge 1$, we consider the two-parameter family of means Qt,s(a,b)=Gs(ta+(1−t)b,(1−t)a+tb)A1−s(a,b), $$ Q_{t,s}(a,b)=G^{s}\bigl(ta+(1-t)b,(1-t)a+tb\bigr)A^{1-s}(a,b), $$ where A and G denote the arithmetic and ...
Omran Kouba
doaj   +1 more source

Weighted inequalities for harmonic means [PDF]

open access: yesMathematical Inequalities & Applications, 2006
https://mia.ele-math.com/open ...
Ortega-Salvador, Pedro   +1 more
openaire   +3 more sources

Sharp Power Mean Bounds for the One-Parameter Harmonic Mean

open access: yesJournal of Function Spaces, 2015
We present the best possible parameters α=α(r) and β=β(r) such that the double inequality Mα(a,b)
Yu-Ming Chu, Li-Min Wu, Ying-Qing Song
doaj   +1 more source

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