Results 21 to 30 of about 96,184 (281)

Complete Monotonicity of Functions Connected with the Exponential Function and Derivatives

open access: yesAbstract and Applied Analysis, 2014
Some complete monotonicity results that the functions ±1/e±t-1 are logarithmically completely monotonic, and that differences between consecutive derivatives of these two functions are completely monotonic, and that the ratios between consecutive ...
Chun-Fu Wei, Bai-Ni Guo
doaj   +1 more source

A class of completely monotonic functions involving the polygamma functions

open access: yesJournal of Inequalities and Applications, 2022
Let Γ ( x ) $\Gamma (x)$ denote the classical Euler gamma function. We set ψ n ( x ) = ( − 1 ) n − 1 ψ ( n ) ( x ) $\psi _{n}(x)=(-1)^{n-1}\psi ^{(n)}(x)$ ( n ∈ N $n\in \mathbb{N}$ ), where ψ ( n ) ( x ) $\psi ^{(n)}(x)$ denotes the nth derivative of the
Li-Chun Liang, Li-Fei Zheng, Aying Wan
doaj   +1 more source

Directional Shift-Stable Functions

open access: yesMathematics, 2021
Recently, some new types of monotonicity—in particular, weak monotonicity and directional monotonicity of an n-ary real function—were introduced and successfully applied.
Radko Mesiar, Andrea Stupňanová
doaj   +1 more source

Some Properties of the Fuss–Catalan Numbers

open access: yesMathematics, 2018
In the paper, the authors express the Fuss⁻Catalan numbers as several forms in terms of the Catalan⁻Qi function, find some analytic properties, including the monotonicity, logarithmic convexity, complete monotonicity, and minimality, of the ...
Feng Qi, Pietro Cerone
doaj   +1 more source

Functional inequalities for the Bickley function [PDF]

open access: yes, 2013
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, Cauchy-Schwarz, Carlson ...
Baricz, Árpád, Pogány, Tibor K.
core   +2 more sources

Monotonicity properties and bounds for the complete p-elliptic integrals

open access: yesJournal of Inequalities and Applications, 2018
We generalize several monotonicity and convexity properties as well as sharp inequalities for the complete elliptic integrals to the complete p-elliptic integrals.
Ti-Ren Huang   +3 more
doaj   +1 more source

Several Functions Originating from Fisher–Rao Geometry of Dirichlet Distributions and Involving Polygamma Functions

open access: yesMathematics, 2023
In this paper, the authors review and survey some results published since 2020 about (complete) monotonicity, inequalities, and their necessary and sufficient conditions for several newly introduced functions involving polygamma functions and originating
Feng Qi, Ravi Prakash Agarwal
doaj   +1 more source

Convergence and regularization for monotonicity-based shape reconstruction in electrical impedance tomography [PDF]

open access: yes, 2016
The inverse problem of electrical impedance tomography is severely ill-posed, meaning that, only limited information about the conductivity can in practice be recovered from boundary measurements of electric current and voltage.
Garde, Henrik, Staboulis, Stratos
core   +2 more sources

Complete monotonicity related to the k-polygamma functions with applications

open access: yesAdvances in Difference Equations, 2019
In this paper, we prove complete monotonicity of some functions involving k-polygamma functions. As an application of the main result, we also give new upper and lower bounds of the k-digamma function.
Li Yin, Jumei Zhang, XiuLi Lin
doaj   +1 more source

Supermodularity and preferences [PDF]

open access: yes, 2008
We uncover the complete ordinal implications of supermodularity on finite lattices under the assumption of weak monotonicity. In this environment, we show that supermodularity is ordinally equivalent to the notion of quasisupermodularity introduced by ...
Chambers, Christopher P.   +1 more
core   +4 more sources

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