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Completely monotonic degree of a function involving trigamma and tetragamma functions [PDF]

open access: yesAIMS Mathematics, 2020
Let $\psi(x)$ be the digamma function. In the paper, the author reviews backgrounds and motivations to compute complete monotonic degree of the function $\Psi(x)=[\psi'(x)]^2+\psi''(x)$ with respect to $x\in(0,\infty)$, confirms that completely monotonic
Feng Qi
doaj   +2 more sources

The derivative of a monotonic discontinuous function [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1965
where fn(x) takes the values 0, 1/2, and 1 on the sets x xn, respectively. We modify his construction by replacing the coefficients 2-n with appropriate values cn. By hypothesis, { xn} = nE (Ej open, EjDEj+,). For each j, let E(U, k) } denote the family of components of Ej.
George Piranian
  +5 more sources

Monotonic Averages of Convex Functions

open access: bronzeJournal of Mathematical Analysis and Applications, 2000
AbstractWe investigate the monotonicity of various averages of the values of a convex (or concave) function at n equally spaced points. For a convex function, averages without end points increase with n, while averages with end points decrease. Averages including one end point are treated as a special case of upper and lower Riemann sums, which are ...
Grahame Bennett, G. J. O. Jameson
openalex   +4 more sources

ReMIX: Regret Minimization for Monotonic Value Function Factorization in Multiagent Reinforcement Learning [PDF]

open access: yesarXiv.org, 2023
Value function factorization methods have become a dominant approach for cooperative multiagent reinforcement learning under a centralized training and decentralized execution paradigm.
Yongsheng Mei, Hanhan Zhou, Tian Lan
semanticscholar   +1 more source

Mixture functions and their monotonicity [PDF]

open access: yesInformation Sciences, 2019
We consider mixture functions, which are a type of weighted averages for which the corresponding weights are calculated by means of appropriate continuous functions of their inputs. In general, these mixture function need not be monotone increasing. For this reason we study su cient conditions to ensure standard, weak and directional monotonicity for ...
Jana Špirková   +3 more
openaire   +3 more sources

The Metastable Mpemba Effect Corresponds to a Non-monotonic Temperature Dependence of Extractable Work [PDF]

open access: yesFrontiers of Physics, 2021
The Mpemba effect refers to systems whose thermal relaxation time is a non-monotonic function of the initial temperature. Thus, a system that is initially hot cools to a bath temperature more quickly than the same system, initially warm.
R. Ch'etrite   +2 more
semanticscholar   +1 more source

Monotone functions and maps [PDF]

open access: yesRevista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas, 2012
30 pages. Version 2 appeared in RACSAM. In version 3 Corollaries 1 and 2 were corrected.
Nicolai Vorobjov   +2 more
openaire   +3 more sources

Some conditions for sequences to be minimal completely monotonic

open access: yesAIMS Mathematics, 2023
In this article, we establish some necessary conditions for sequences to be minimal completely monotonic. We also present some properties for completely monotonic sequences.
Xifeng Wang, Senlin Guo
doaj   +1 more source

When is a monotone function cyclically monotone?

open access: yesTheoretical Economics, 2021
We provide sufficient conditions for a monotone function with a finite set of outcomes to be cyclically monotone. Using these conditions, we show that any monotone function defined on the domain of gross substitutes is cyclically monotone. The result also extends to the domain of generalized gross substitutes and complements.
Kushnir, Alexey, Lokutsievskiy, Lev V.
openaire   +3 more sources

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