Results 11 to 20 of about 220,781 (280)

Efficient approximation of the incomplete gamma function for use in cloud model applications [PDF]

open access: yesGeoscientific Model Development, 2010
This paper describes an approximation to the lower incomplete gamma function &gamma;<i><sub>l</sub>(a,x)</i> which has been obtained by nonlinear curve fitting. It comprises a fixed number of terms and yields moderate accuracy
U. Blahak
doaj   +5 more sources

The resurgence properties of the incomplete gamma function I [PDF]

open access: yesStudies in Applied Mathematics, 2014
In this paper we derive new representations for the incomplete gamma function, exploiting the reformulation of the method of steepest descents by C. J. Howls (Howls, Proc. R. Soc. Lond. A 439 (1992) 373--396).
Nemes, Gergő
core   +6 more sources

On Extended Convex Functions via Incomplete Gamma Functions [PDF]

open access: yesJournal of Function Spaces, 2021
Convex functions play an important role in many areas of mathematics. They are especially important in the study of optimization problems where they are distinguished by a number of convenient properties.
Yan Zhao   +3 more
openaire   +2 more sources

Chebyshev series: Derivation and evaluation

open access: yesPLoS ONE, 2023
In this paper we use a contour integral method to derive a bilateral generating function in the form of a double series involving Chebyshev polynomials expressed in terms of the incomplete gamma function. Generating functions for the Chebyshev polynomial
Robert Reynolds, Allan Stauffer
doaj   +2 more sources

On the Matrix Versions of Incomplete Extended Gamma and Beta Functions and Their Applications for the Incomplete Bessel Matrix Functions

open access: yesComplexity, 2021
In this paper, we first introduce the incomplete extended Gamma and Beta functions with matrix parameters; then, we establish some different properties for these new extensions. Furthermore, we give a specific application for the incomplete Bessel matrix
Chaojun Zou   +3 more
doaj   +1 more source

Lévy Processes Linked to the Lower-Incomplete Gamma Function

open access: yesFractal and Fractional, 2021
We start by defining a subordinator by means of the lower-incomplete gamma function. This can be considered as an approximation of the stable subordinator, easier to be handled in view of its finite activity.
Luisa Beghin, Costantino Ricciuti
doaj   +1 more source

Some expansion formulas for incomplete H- and H̅-functions involving Bessel functions

open access: yesAdvances in Difference Equations, 2020
In this paper, we assess an integral containing incomplete H-functions and utilize it to build up an expansion formula for the incomplete H-functions including the Bessel function.
Sapna Meena   +3 more
doaj   +1 more source

Some generalised extended incomplete beta functions and applications

open access: yesJournal of New Results in Science, 2022
This paper introduces generalised incomplete beta functions defined by the generalised beta function. Firstly, we provide some of the generalised beta function's basic properties, such as integral representations, summation formulas, Mellin transform ...
Ayşegül Çetinkaya   +3 more
doaj   +1 more source

Monotonicity of the incomplete gamma function with applications

open access: yesJournal of Inequalities and Applications, 2016
In the article, we discuss the monotonicity properties of the function x → ( 1 − e − a x p ) 1 / p / ∫ 0 x e − t p d t $x\rightarrow (1-e^{-ax^{p}} )^{1/p}/\int_{0}^{x}e^{-t^{p}}\,dt$ for a , p > 0 $a, p>0$ with p ≠ 1 $p\neq1$ on ( 0 , ∞ ) $(0, \infty ...
Zhen-Hang Yang, Wen Zhang, Yu-Ming Chu
doaj   +1 more source

Photocatalytic degradation as Davidson–Cole relaxation in time domain [PDF]

open access: yesJournal of Advanced Dielectrics, 2019
Photocatalytic degradation processes of different materials are fitted with Mittag-Leffler function and incomplete gamma function, which are response functions for Cole–Cole relaxation and Davidson–Cole relaxation.
C. L. WANG
doaj   +1 more source

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