Results 21 to 30 of about 493 (95)

A Ces\`aro Average of Goldbach numbers [PDF]

open access: yes, 2012
Let $\Lambda$ be the von Mangoldt function and $(r_G(n) = \sum_{m_1 + m_2 = n} \Lambda(m_1) \Lambda(m_2))$ be the counting function for the Goldbach numbers. Let $N \geq 2$ be an integer.
Languasco, Alessandro   +1 more
core   +1 more source

Laplace transform generation theorems and local Cauchy problems

open access: yesAbstract and Applied Analysis, Volume 2004, Issue 1, Page 69-90, 2004., 2004
We give new criterions to decide if some vector‐valued function is a local Laplace transform and apply this to the theory of local Cauchy problems. This leads to an improvement of known results and new Hille‐Yosida‐type theorems for local convoluted semigroups.
Claus Müller
wiley   +1 more source

Analytical investigations of the Sumudu transform and applications to integral production equations

open access: yesMathematical Problems in Engineering, Volume 2003, Issue 3, Page 103-118, 2003., 2003
The Sumudu transform, whose fundamental properties are presented in this paper, is little known and not widely used. However, being the theoretical dual to the Laplace transform, the Sumudu transform rivals it in problem solving. Having scale and unit‐preserving properties, the Sumudu transform may be used to solve problems without resorting to a new ...
Fethi Bin Muhammed Belgacem   +2 more
wiley   +1 more source

The relationship between the local temperature and the local heat flux within a one‐dimensional semi‐infinite domain of heat wave propagation

open access: yesMathematical Problems in Engineering, Volume 2003, Issue 4, Page 173-179, 2003., 2003
The relationship between the local temperature and the local heat flux has been established for the homogeneous hyperbolic heat equation. This relationship has been written in the form of a convolution integral involving the modified Bessel functions.
Vladimir V. Kulish, Vasily B. Novozhilov
wiley   +1 more source

Abelian theorems for transformable Boehmians

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 3, Page 489-496, 1994., 1993
A class of generalized functions called transformable Boehmians contains a proper subspace that can be identified with the class of Laplace transformable distributions. In this note, we establish some Abelian theorems for transformable Boehmians.
Dennis Nemzer
wiley   +1 more source

Associated transforms for solution of nonlinear equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 14, Issue 1, Page 177-190, 1991., 1991
Nonlinear multivariable differential or integrodifferential equations with terms of mixed dimensionality can be solved using multidimensional Laplace transform. The special technique used to find the inverse of the multidimensional Laplace transform is known as the association of variables.
Joyati Debnath, Narayan C. Debnath
wiley   +1 more source

A Parseval‐Goldstein type theorem on the widder potential transform and its applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 14, Issue 3, Page 517-524, 1991., 1990
In this paper a Parseval‐Goldstein type theorem involving the Widder potential transform and a Laplace type integral transform is given. The theorem is then shown to yield a relationship between the 𝒦‐transform and the Laplace type integral transform. The theorem yields some simple algorithms for evaluating infinite integrals. Using the theorem and its
O. Yürekli, I. Sadek
wiley   +1 more source

New characterizations of completely monotone functions and Bernstein functions, a converse to Hausdorff’s moment characterization theorem

open access: yesArab Journal of Mathematical Sciences, 2019
We give several new characterizations of completely monotone functions and Bernstein functions via two approaches: the first one is driven algebraically via elementary preserving mappings and the second one is developed in terms of the behavior of their ...
Rafik Aguech, Wissem Jedidi
doaj   +1 more source

On q-Laplace Transforms of the q-Bessel Functions [PDF]

open access: yes, 2007
Mathematics Subject Classification: 33D15, 44A10, 44A20The present paper deals with the evaluation of the q-Laplace transforms of a product of basic analogues of the Bessel functions.
Kalla, S., Purohit, S.
core  

On the Laplace transform of absolutely monotonic functions

open access: yes, 2016
We obtain necessary and sufficient conditions on a function in order that it be the Laplace transform of an absolutely monotonic function.
Koumandos, Stamatis, Pedersen, Henrik L.
core   +1 more source

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