Results 1 to 10 of about 489 (98)

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   +2 more sources

The Estimators of the Bent, Shape and Scale Parameters of the Gamma-Exponential Distribution and Their Asymptotic Normality

open access: yesMathematics, 2022
When modeling real phenomena, special cases of the generalized gamma distribution and the generalized beta distribution of the second kind play an important role.
Alexey Kudryavtsev, Oleg Shestakov
doaj   +2 more sources

Inequalities for Basic Special Functions Using Hölder Inequality

open access: yesMathematics
Let p,q≥1 be two real numbers such that 1p+1q=1, and let a,b∈R be two parameters defined on the domain of a function, for example, f. Based on the well known Hölder inequality, we propose a generic inequality of the form |f(ap+bq)|≤|f(a)|1p|f(b)|1q, and ...
Mohammad Masjed-Jamei   +2 more
doaj   +2 more sources

Symbolic Maximum Likelihood Estimation with Mathematica [PDF]

open access: yes, 1999
Mathematica is a symbolic programming language that empowers the user to undertake complicated algebraic tasks. One such task is the derivation of maximum likelihood estimators, demonstrably an important topic in statistics at both the research and ...
Rose, Colin, Smith, Murray D.
core   +2 more sources

Immunological pathways underlying autism: Findings from Mendelian randomization and genetic colocalisation analyses.

open access: yesmedRxiv, 2022
Emerging evidence implicates the role of inflammation and immunity in autism. However, little is known about the involvement of specific immunological pathways and their causal role.
C. Dardani   +26 more
semanticscholar   +1 more source

On the use of the l(2)-norm for texture analysis of polarimetric SAR data [PDF]

open access: yes, 2016
In this paper, the use of the l2-norm, or Span, of the scattering vectors is suggested for texture analysis of polarimetric synthetic aperture radar (SAR) data, with the benefits that we need neither an analysis of the polarimetric channels separately ...
Deng, xinping, López Martínez, Carlos
core   +2 more sources

6-loop anomalous dimension of a single impurity operator from AdS/CFT and multiple zeta values [PDF]

open access: yes, 2011
Anomalous dimension of the simplest nontrivial single impurity operator in the beta=1/2 deformed theory is determined at six loops from the AdS/CFT correspondence.
Bajnok, Zoltan, Deeb, Omar el
core   +2 more sources

Approximation to Distribution of Product of Random Variables Using Orthogonal Polynomials for Lognormal Density [PDF]

open access: yes, 2012
We derive a closed-form expression for the orthogonal polynomials associated with the general lognormal density. The result can be utilized to construct easily computable approximations for probability density function of a product of random variables ...
Hämäläinen, Jyri   +3 more
core   +2 more sources

On the Invariance of Residues of Feynman Graphs [PDF]

open access: yes, 2001
We use simple iterated one-loop graphs in massless Yukawa theory and QED to pose the following question: what are the symmetries of the residues of a graph under a permutation of places to insert subdivergences.
Bauer   +33 more
core   +4 more sources

Fish zona radiata (eggshell) protein: a sensitive biomarker for environmental estrogens.

open access: yesEnvironmental Health Perspectives, 1997
Environmental estrogens have recently caused great concern because of their ability to mimic natural hormones and influence vital endocrine functions in humans and wildlife.
A. Arukwe, F. Knudsen, Anders Goksøyr
semanticscholar   +1 more source

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