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Let $ f:(0,\infty)\rightarrow \Bbb{R} $ be a completely monotonic function. In this paper, we present some properties of this functions and several new classes of completely monotonic functions. We also give some special functions such that…

经典分析与常微分方程 · 数学 2025-05-30 Mostafa Najafi , Ali Morassaei

In the paper, necessary and sufficient conditions are presented for a function involving a ratio of gamma functions to be logarithmically completely monotonic. This extends and generalizes the main result in [\emph{Inequalities and…

经典分析与常微分方程 · 数学 2012-08-21 Feng Qi , Bai-Ni Guo

The extensively cited work of Barzilai, J. (1997): Deriving weights from pairwise comparison matrices, published in Journal of the Operational Research Society, 48(12), 1226-1232., derives the geometric mean method from two simple axioms.…

最优化与控制 · 数学 2021-02-11 Dóra Gréta Petróczy , László Csató

In the paper the authors alternatively prove that the function $x^\alpha\big[\ln\frac{px}{x+p+1}-\psi_p(x)\big]$ is completely monotonic on $(0,\infty)$ if and only if $\alpha \le 1$, where $p\in\mathbb{N}$ and $\psi_p(x)$ is the…

经典分析与常微分方程 · 数学 2014-08-13 Valmir Krasniqi , Feng Qi

In this work we prove that if an entire function $f(z)$ is of order strictly less than one and it has only negative zeros, then for each nonnegative integer $k,m$ the real function…

综合数学 · 数学 2023-12-11 Ruiming Zhang

We simplify the proof of some widely used theoretical theorems, extending their applicability, while correcting some erroneous results. We also generalize key results and present new results that contribute to the development of the theory.…

经典分析与常微分方程 · 数学 2025-10-02 V. E. Sándor Szabó

We prove an invariance principle (functional central limit theorem) for a vector-valued additive functional of a Markov chain for almost every starting point with respect to an ergodic equilibrium distribution. The hypothesis is a moment…

概率论 · 数学 2011-10-20 F. Rassoul-Agha , T. Seppalainen

In this paper our aim is to deduce some complete monotonicity properties and functional inequalities for the Bickley function. The key tools in our proofs are the classical integral inequalities, like Chebyshev, H\"older-Rogers,…

经典分析与常微分方程 · 数学 2014-04-23 Árpád Baricz , Tibor K. Pogány

We present a fixed point theorem for a class of (potentially) non-monotonic functions over specially structured complete lattices. The theorem has as a special case the Knaster-Tarski fixed point theorem when restricted to the case of…

计算机科学中的逻辑 · 计算机科学 2015-02-10 Zoltán Ésik , Panos Rondogiannis

In the article, a notion "logarithmically absolutely monotonic function" is introduced, an inclusion that a logarithmically absolutely monotonic function is also absolutely monotonic is revealed, the logarithmically complete monotonicity…

经典分析与常微分方程 · 数学 2010-08-20 Feng Qi , Bai-Ni Guo

We prove the conjecture stated in F. Qi and R. Agarwal, \textit{On complete monotonicity for several classes of functions related to ratios of gamma functions}, J. Inequal. Appl. (2019), 1-42, that the function $1/\arctan$ is…

经典分析与常微分方程 · 数学 2021-12-21 Vladimir Jovanović , Milanka Treml

The main aim of the paper is to present a general version of the Fourier Tauberian theorem for monotone functions. This result, together with Berezin's inequality, allows us to obtain a refined version the Li-Yau estimate for the counting…

谱理论 · 数学 2007-05-23 Y Safarov

In this paper, we focus on the difference analogue of the Stothers-Mason theorem for entire functions of order less than 1, which can be seen as difference $abc$ theorem for entire functions. We also obtain the difference analogue of…

复变函数 · 数学 2024-12-30 Rui-Chun Chen , Zhi-Tao Wen

We give several new characterizations of completely monotone functions and Bernstein functions via two approaches: the first one is driven algebraically via elementary preserving mappings and the second one is developed in terms of the…

概率论 · 数学 2016-02-17 Rafik Aguech , Wissem Jedidi

We consider the following question: if a function of the form $\int_0^{\infty}\varphi(t)\, e^{-xt}dt$ is completely monotonic, is it then $\varphi\ge0$? It turns out that the question is related to a moment problem. In the end we apply…

经典分析与常微分方程 · 数学 2021-12-21 Vladimir Jovanović , Milanka Treml

Based on a sequence of numerical computations, a conjecture is presented regarding the class of functions $H(x;a)=\exp(a)-(1+a/x)^x$, and the open problem of determining the values of $a$ for which the functions are completely monotonic…

经典分析与常微分方程 · 数学 2010-06-14 E. Shemyakova , S. I. Khashin , D. J. Jeffrey

The function $G(x)=(1-\ln x /\ln(1+x))x\ln x$ has been considered by Alzer, Qi and Guo. We prove that $G'$ is completely monotonic by finding an integral representation of the holomorphic extension of $G$ to the cut plane. A main difficulty…

经典分析与常微分方程 · 数学 2011-06-01 Christian Berg , Henrik L. Pedersen

In this paper we present several new classes of logarithmically completely monotonic functions. Our functions have in common that they are defined in terms of the $q-$gamma and $q-$digamma functions. As an applications of this results, some…

经典分析与常微分方程 · 数学 2015-12-21 Khaled Mehrez

An inequality, which combines the concept of completely monotone functions with the theory of divided differences, is proposed. It is a straightforward generalization of a result, recently introduced by two of the present authors.

经典分析与常微分方程 · 数学 2022-04-15 Vasiliki Bitsouni , Nikolaos Gialelis , Dan-Stefan Marinescu

We prove that every completely monotone function defined on a right-unbounded open interval admits a Newton series expansion at every point of that interval. This result can be viewed as an analog of Bernstein's little theorem for…

经典分析与常微分方程 · 数学 2025-10-14 Thomas Lamby , Jean-Luc Marichal , Naïm Zenaïdi
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