Results 21 to 30 of about 833,509 (313)

On modifications of the exponential integral with the Mittag-Leffler function [PDF]

open access: yesFractional Calculus and Applied Analysis, 2018
In this paper we survey the properties of the Schelkunoff modification of the Exponential integral and we generalize it with the Mittag-Leffler function.
F. Mainardi, E. Masina
semanticscholar   +1 more source

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

Decomposition of Time-Ordered Products and Path-Ordered Exponentials [PDF]

open access: yes, 1998
We present a decomposition formula for $U_n$, an integral of time-ordered products of operators, in terms of sums of products of the more primitive quantities $C_m$, which are the integrals of time-ordered commutators of the same operators. The resulting
Lam, C. S.
core   +3 more sources

A p-analogue of the exponential integral function and some properties

open access: yes, 2020
In this paper, we introduced a p-analogue of the exponential integral function and further establish some analytical inequalities involving the function.
Ahmed Yakubu, K. Nantomah, M. Iddrisu
semanticscholar   +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

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

Identities of symmetry for Euler polynomials arising from quotients of fermionic integrals invariant under S_3 [PDF]

open access: yes, 2010
In this paper, we derive eight basic identities of symmetry in three variables related to Euler polynomials and alternating power sums. These and most of their corollaries are new, since there have been results only about identities of symmetry in two ...
Kim, Dae San, Park, Kyoung Ho
core   +3 more sources

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

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