Results 41 to 50 of about 360,646 (291)

Infrared Fixed Point Physics in ${\rm SO}(N_c)$ and ${\rm Sp}(N_c)$ Gauge Theories [PDF]

open access: yes, 2017
We study properties of asymptotically free vectorial gauge theories with gauge groups $G={\rm SO}(N_c)$ and $G={\rm Sp}(N_c)$ and $N_f$ fermions in a representation $R$ of $G$, at an infrared (IR) zero of the beta function, $\alpha_{IR}$, in the non ...
Ryttov, Thomas A., Shrock, Robert
core   +2 more sources

Association Between Symptomatic Knee Osteoarthritis and Target Glycemic Control in Individuals with Type 2 Diabetes

open access: yesArthritis Care &Research, Accepted Article.
Objective Knee osteoarthritis (OA) commonly affects individuals with Type 2 diabetes (T2DM) and is associated with increased risk of diabetes‐related complications. To better understand potential mechanisms, we examined the association between symptomatic knee OA and glycemic control in individuals with T2DM.
Lauren K. King   +10 more
wiley   +1 more source

Monotonicity and positivity of several functions involving ratios and products of polygamma functions

open access: yesJournal of Inequalities and Applications
Let ψ ( x ) $\psi (x)$ denote the digamma function, that is, the logarithmic derivative of the classical Euler gamma function Γ ( x ) $\Gamma (x)$ . In the paper, the authors discover the monotonic properties of the functions ψ ( n ) ( x ) x ψ ( n + 1 ) (
Feng Qi, Dongkyu Lim, Kwara Nantomah
doaj   +1 more source

A criterion for $p$-solvability of finite groups, where $p=7$ or $11$ [PDF]

open access: yesJournal of Mahani Mathematical Research
For a finite group $G$, define $ \psi^{\prime \prime}(G)=\psi(G)/|G|^2 $, where $\psi(G)=\sum_{g\in G}o(g)$ and $o(g)$ denotes the order of $g \in G $.  In this paper, we give a criterion for $p$-solvability by the function  $\psi''$, where $ p \in \{7,  
Sara Pouyandeh
doaj   +1 more source

Determination of a Wave Function Functional

open access: yes, 2005
In this paper we propose the idea of expanding the space of variations in standard variational calculations for the energy by considering the wave function $\psi$ to be a functional of a set of functions $\chi: \psi = \psi[\chi]$, rather than a function.
C. F. Fischer   +9 more
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

(λ, ψ)-Bernstein-Kantorovich operators

open access: yesDemonstratio Mathematica
In this article, we introduce a new family of (λ,ψ)\left(\lambda ,\psi )-Bernstein-Kantorovich operators which depends on a parameter λ\lambda , derived from the basis functions of Bézier curves and an integrable function ψ\psi .
Aktuğlu Hüseyin   +3 more
doaj   +1 more source

Inequalities Involving $q$-Analogue of Multiple Psi Functions

open access: yesComptes Rendus. Mathématique, 2020
Logarithmic derivative of the multiple gamma function is known as the multiple psi function. In this work $q$-analogue of multiple psi functions of order $n$ have been considered.
Das, Sourav
doaj   +1 more source

Order estimates of the uniform approximations by Zygmund sums on the classes of convolutions of periodic functions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
The Zygmund sums of a function $f\in L_{1}$ are trigonometric polynomials of the form $$Z^{s}_{n-1}(f;t):=\frac{a_{0}}{2}+\sum_{k=1}^{n-1}\Big(1-\big(\frac{k}{n}\big)^{s}\Big) \big(a_{k}(f)\cos kt+b_{k}(f)\sin kt\big), s>0,$$ where $a_{k}(f)$ and $b_{k ...
A.S. Serdyuk, U.Z. Hrabova
doaj   +1 more source

Determinantal inequalities for the psi function [PDF]

open access: yesMathematical Inequalities & Applications, 1999
Results are offered about nonnegativity resp. negativity of second order determinants containing derivatives of the psi function (the logarithmetic derivative of the gamma function) and of shifted psi functions.
openaire   +1 more source

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