Results 21 to 30 of about 107,939 (274)

A complete monotonicity property of the multiple gamma function

open access: yesComptes Rendus. Mathématique, 2020
We consider the following functions \[ f_n(x)=1-\ln x+\frac{\ln G_n(x+1)}{x} \text{ and }g_n(x)=\frac{\@root x \of {G_n(x+1)}}{x},\; x\in (0,\infty ),\; n\in \mathbb{N}, \] where $G_n(z)=\left(\Gamma _n(z)\right)^{(-1)^{n-1}}$ and $\Gamma _n$ is the ...
Das, Sourav
doaj   +1 more source

Inequalities, asymptotic expansions and completely monotonic functions related to the gamma function [PDF]

open access: yes, 2014
In this paper, we present some completely monotonic functions and asymptotic expansions related to the gamma function. Based on the obtained expansions, we provide new bounds for Γ(x + 1)/Γ(x + 1/2) and Γ(x + 1/2)
Chen, Chao-Ping, Paris, Richard B.
core   +4 more sources

Completely monotonic ratios of basic and ordinary gamma functions

open access: yes, 2020
We investigate conditions for logarithmic complete monotonicity of product ratios of gamma and q-gamma functions whose arguments are linear functions of the variable.
Berg, Christian   +2 more
core   +1 more source

Properties of modified Bessel functions and completely monotonic degrees of differences between exponential and trigamma functions [PDF]

open access: yes, 2014
In the paper, the author establishes inequalities, monotonicity, convexity, and unimodality for functions concerning the modified Bessel functions of the first kind and compute the completely monotonic degrees of differences between the exponential and ...
Qi, Feng
core   +1 more source

Qi’s conjectures on completely monotonic degrees of remainders of asymptotic formulas of di- and trigamma functions

open access: yesJournal of Inequalities and Applications, 2020
Several conjectures posed by Qi on completely monotonic degrees of remainders for the asymptotic formulas of the digamma and trigamma functions are proved.
Ai-Min Xu, Zhong-Di Cen
doaj   +1 more source

Comparison of visual quantities in untrained neural networks

open access: yesCell Reports, 2023
Summary: The ability to compare quantities of visual objects with two distinct measures, proportion and difference, is observed even in newborn animals.
Hyeonsu Lee   +3 more
doaj   +1 more source

A Class of Logarithmically Completely Monotonic Functions and Their Applications

open access: yesJournal of Applied Mathematics, 2014
We study the recent investigations on a class of functions which are logarithmically completely monotonic. Two open problems are also presented.
Senlin Guo
doaj   +1 more source

Completely Monotone Functions: A Digest [PDF]

open access: yes, 2014
To appear in: K. Alladi, G.V. Milovanovic and M. Th. Rassias (Eds.): "Analytic Number Theory, Approximation Theory and Special Functions", Special Volume dedicated to Professor Hari M.
openaire   +2 more sources

Series representations of the remainders in the expansions for certain functions with applications [PDF]

open access: yes, 2016
We present a summary of the series representations of the remainders in the expansions in ascending powers of t of 2/(et+1), sech t and coth t and establish simple bounds for these remainders when t>0.
Chen, Chao-Ping, Paris, Richard B.
core   +2 more sources

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

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