Results 11 to 20 of about 38,570 (167)

Degenerate exponential integral function and its properties [PDF]

open access: yesArab Journal of Mathematical Sciences
Purpose – In this paper, the author introduces a degenerate exponential integral function and further studies some of its analytical properties. The new function is a generalization of the classical exponential integral function and the properties ...
Kwara Nantomah
doaj   +1 more source

The Integrating Factor Method in Banach Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
The so called integrating factor method, used to find solutions of ordinary differential equations of a certain type, is well known. In this article, we extend it to equations with values in a Banach space.
Josefina Alvarez   +2 more
doaj   +1 more source

Optimal $$C^\infty $$-approximation of functions with exponentially or sub-exponentially integrable derivative

open access: yesCalculus of Variations and Partial Differential Equations, 2022
AbstractWe discuss Meyers-Serrin’s type results for smooth approximations of functions$$b=b(t,x): \mathbb {R}\times \mathbb {R}^n\rightarrow \mathbb {R}^m$$b=b(t,x):R×Rn→Rm, with convergence of an energy of the form$$\begin{aligned} \int _{\mathbb {R}}\int _{\mathbb {R}^n} w(t,x) \varphi \left( |Db(t,x)|\right) \textrm{d} x \textrm{d} t\,, \end{aligned}
Ambrosio Luigi   +3 more
openaire   +4 more sources

Asymptotic Expansion of the Modified Exponential Integral Involving the Mittag-Leffler Function

open access: yesMathematics, 2020
We consider the asymptotic expansion of the generalised exponential integral involving the Mittag-Leffler function introduced recently by Mainardi and Masina [Fract. Calc. Appl. Anal. 21 (2018) 1156−1169].
Richard Paris
doaj   +1 more source

New Weighted Integral Inequalities and Its Application to Exponential Stability Analysis of Time-Delay Systems

open access: yesIEEE Access, 2016
This paper is concerned with the exponential stability analysis for time-delay systems. First, two new weighted integral inequalities are presented based on the auxiliary function-based integral inequalities.
Cheng Gong, Guopu Zhu, Ligang Wu
doaj   +1 more source

A Series Representation for the Hurwitz–Lerch Zeta Function

open access: yesAxioms, 2021
We derive a new formula for the Hurwitz–Lerch zeta function in terms of the infinite sum of the incomplete gamma function. Special cases are derived in terms of fundamental constants.
Robert Reynolds, Allan Stauffer
doaj   +1 more source

Integral inequalities for exponentially harmonically convex functions via fractional integral operators [PDF]

open access: yesMiskolc Mathematical Notes, 2021
The main aim of this paper is to derive some new integral inequalities related to Hermite-Hadamard type by using Riemann-Liouville fractional integral operator for the class of exponentially harmonically convex functions. The formal technique of this paper may enhance further research in this field.
Rashid, Saima   +3 more
openaire   +4 more sources

KETAKSAMAAN INTEGRAL GRONWALL-BELLMAN UNTUK FUNGSI BERPANGKAT

open access: yesBarekeng, 2011
Integral inequality of Gronwall-Bellman is known as an integral inequality which consists of differential and integral forms. Integral inequality of Gronwall-Bellman involving several functions that some definite condition hold and integral values of ...
Monalisa E. Rijoly   +2 more
doaj   +1 more source

Hermite–Hadamard-Type Inequalities for Convex Functions via the Fractional Integrals with Exponential Kernel

open access: yesMathematics, 2019
In this paper, we establish three fundamental integral identities by the first- and second-order derivatives for a given function via the fractional integrals with exponential kernel.
Xia Wu, JinRong Wang, Jialu Zhang
doaj   +1 more source

Increasing property and logarithmic convexity of functions involving Dirichlet lambda function

open access: yesDemonstratio Mathematica, 2023
In this article, with the help of an integral representation of the Dirichlet lambda function, by means of a monotonicity rule for the ratio of two integrals with a parameter, and by virtue of complete monotonicity and another property of an elementary ...
Qi Feng, Lim Dongkyu
doaj   +1 more source

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