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We consider convexity and monotonicity properties for some functions related to the $q$-gamma function. As applications, we give a variety of inequalities for the $q$-gamma function, the $q$-digamma function $\psi_q(x)$, and the $q$-series.…

Number Theory · Mathematics 2019-02-26 Mohamed El Bachraoui , József Sándor

We state some sufficient or equivalent conditions to GRH of general L-functions in terms of monotonicity of certain weighted summatory functions.

Number Theory · Mathematics 2012-04-10 Masatoshi Suzuki

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…

Classical Analysis and ODEs · Mathematics 2025-10-14 Thomas Lamby , Jean-Luc Marichal , Naïm Zenaïdi

In this work we establish a connection between two classical notions, unrelated so far: Harmonic functions on the one hand and absolutely monotonic functions on the other hand. We use this to prove convexity type and propagation of…

Analysis of PDEs · Mathematics 2015-12-09 Gabor Lippner , Dan Mangoubi

We characterize of the $q$-Bernstein functions in terms of $q$-Laplace transform. Moreover, we present several results of $q$-completely monotonic, $q$-log completely monotonic and $q$-Bernstein functions.

Classical Analysis and ODEs · Mathematics 2016-02-10 Valmir Krasniqi , Toufik Mansour

The probabilistic satisfiability of a logical expression is a fundamental concept known as the partition function in statistical physics and field theory, an evaluation of a related graph's Tutte polynomial in mathematics, and the…

Discrete Mathematics · Computer Science 2022-06-09 Stephen Eubank , Madhurima Nath , Yihui Ren , Abhijin Adiga

In this article, we study exponents which preserve complete monotonicity of functions on lattices. We prove that for any completely monotone function $f$ on a finite lattice, $f^\alpha$ is completely monotone for all $\alpha\geq c$, where…

Probability · Mathematics 2023-12-06 Jnaneshwar Baslingker , Biltu Dan

In this present investigation, we found a set of sufficient conditions to be imposed on the parameters of the Fox H-functions which allow us to conclude that it is non-negative. As applications, various new facts regarding the Fox-Wright…

Classical Analysis and ODEs · Mathematics 2020-09-08 Khaled Mehrez

In the present paper, necessary and sufficient conditions are established for a function involving divided differences of the digamma and trigamma functions to be completely monotonic. Consequently, necessary and sufficient conditions are…

Classical Analysis and ODEs · Mathematics 2016-06-30 Feng Qi , Bai-Ni Guo

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…

Probability · Mathematics 2016-02-17 Rafik Aguech , Wissem Jedidi

We review a few results concerning interpolation of monotone functions on infinite lattices, emphasizing the role of set-theoretic considerations. We also discuss a few open problems.

Rings and Algebras · Mathematics 2007-05-23 Martin Goldstern

Motivated by the substantial development of the special functions, we contribute to establish some rigorous results on the general series identities with bounded sequences and hypergeometric functions with different arguments, which are…

General Mathematics · Mathematics 2019-02-19 Mohammad Idris Qureshi , Saima Jabee , Mohammad Shadab

The idea of monotonicity (or positive-definiteness in the linear case) is shown to be the central theme of the solution theories associated with problems of mathematical physics. A "grand unified" setting is surveyed covering a…

Analysis of PDEs · Mathematics 2014-06-19 Rainer Picard , Sascha Trostorff , Marcus Waurick

In this paper, the authors establish some inequalities involving the Psi and $k$-Gamma functions. The procedure utilizes some monotonicity properties of some functions associated with the Psi and $k$-Gamma functions.

Classical Analysis and ODEs · Mathematics 2016-02-17 Kwara Nantomah

New perspectives, proofs, and some extensions of known results are presented concerning the behavior of the Fitzpatrick function of a monotone type operator in the general context of a locally convex space.

Functional Analysis · Mathematics 2017-12-27 M. D. Voisei

In the paper, by convolution theorem of the Laplace transforms, a monotonicity rule for the ratio of two Laplace transforms, Bernstein's theorem for completely monotonic functions, and other analytic techniques, the authors verify…

General Mathematics · Mathematics 2024-06-17 Hong-Ping Yin , Ling-Xiong Han , Feng Qi

In this note, simple proofs of certain well-known results involving the positive square root of positive matrices are given.

General Mathematics · Mathematics 2023-06-21 Mohamed Amine Aouichaoui , Mohammed Hichem Mortad

In the paper, we establish an inequality involving the gamma and digamma functions and use it to prove the negativity and monotonicity of a function involving the gamma and digamma functions.

Classical Analysis and ODEs · Mathematics 2016-06-30 Feng Qi , Bai-Ni Guo

By making use of the familiar Mathieu series and its generalizations, the authors derive a number of new integral representations and present a systematic study of probability density functions and probability distributions associated with…

Classical Analysis and ODEs · Mathematics 2016-10-19 Zivorad Tomovski , Khaled Mehrez

For an operator monotone function $f(t)$ on the positive real line, we show the operator monotonicity of the type of the functions $(t-a)(t-b)/(f(t)-f(a))(f^\sharp(t)-f^\sharp(b))$.

Functional Analysis · Mathematics 2012-06-26 Masato Kawasaki , Masaru Nagisa