Results 41 to 50 of about 3,885 (102)

On an Euler–Abel Type Transform of Trigonometric Series

open access: yesAbstract and Applied Analysis, Volume 2024, Issue 1, 2024.
In the paper, we give several limit case Euler–Abel type transforms for alternating cosine and sine series. Making use of a property of the operator of generalized difference, applied in the transforms, we give transforms for nonalternating series, which are stronger than similar transforms for alternating series given earlier.
N. Sh. Berisha   +3 more
wiley   +1 more source

Elliptic solutions to difference non-linear equations and related many-body problems

open access: yes, 1997
We study algebro-geometric (finite-gap) and elliptic solutions of fully discretized KP or 2D Toda equations. In bilinear form they are Hirota's difference equation for $\tau$-functions.
Krichever, I.   +2 more
core   +1 more source

Expansions of Iterated Stratonovich Stochastic Integrals of Multiplicities 1 to 4 Based on Generalized Multiple Fourier Series

open access: yes, 2020
The article is devoted to the expansions of iterated Stratonovich stochastic integrals of multiplicities 1 to 4 on the basis of the method of generalized multiple Fourier series that are converge in the sense of norm in Hilbert space $L_2([t, T]^k),$ $k ...
Kuznetsov, Dmitriy F.
core   +2 more sources

Methods in Mathematica for Solving Ordinary Differential Equations

open access: yes, 2011
An overview of the solution methods for ordinary differential equations in the Mathematica function DSolve is presented.Comment: 13 ...
Göktaş, Ünal, Kapadia, Devendra
core   +1 more source

Solving and classifying the solutions of the Yang-Baxter equation through a differential approach. Two-state systems

open access: yes, 2018
The formal derivatives of the Yang-Baxter equation with respect to its spectral parameters, evaluated at some fixed point of these parameters, provide us with two systems of differential equations. The derivatives of the $R$ matrix elements, however, can
Vieira, R. S.
core   +2 more sources

The Faà di Bruno Hopf Algebra for Multivariable Feedback Recursions in the Center Problem for Higher Order Abel Equations [PDF]

open access: yes, 2016
Poincare’s center problem asks for conditions under which a planar polynomial system of ordinary differential equations has a center. It is well understood that the Abel equation naturally describes the problem in a convenient coordinate system. In 1990,
K. Ebrahimi-Fard, W. Gray
semanticscholar   +1 more source

If Archimedes would have known functions [PDF]

open access: yes, 2014
These are notes and slides from a Pecha-Kucha talk given on March 6, 2013. The presentation tinkered with the question whether calculus on graphs could have emerged by the time of Archimedes, if the concept of a function would have been available 2300 ...
Knill, Oliver
core  

From Abel’s differential equations to Hilbert’s 16th problem

open access: yesSão Paulo Journal of Mathematical Sciences
The study of the limit cycles of planar polynomial differential equations is motivated both by its appearance in many mathematical models of the real-world as for the second part of Hilbert’s 16th problem.
A. Gasull
semanticscholar   +1 more source

Lower bounds for the number of limit cycles of trigonometric Abel equations [PDF]

open access: yes, 2006
"Vegeu el resum a l'inici del document del fitxer adjunt"
Gasull i Embid, Armengol   +3 more
core  

Complex Centers of Polynomial Differential Equations

open access: yes, 2007
We present some results on the existence and nonexistence of centers for polynomial first order ordinary differential equations with complex coefficients.
M. Alwash, Mohamad Ali
core   +3 more sources

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