Results 21 to 30 of about 3,371,611 (178)

Optical solitons in birefringent fibers with quadratic-cubic nonlinearity using three integration architectures

open access: yesAIP Advances, 2021
In this work, the nonlinear Schrödinger’s equation is studied for birefringent fibers incorporating four-wave mixing. The improved tanϕ(ξ)2-expansion, first integral, and G′G2-expansion methods are used to extract a novel class of optical solitons in the
J. F. Gómez-Aguilar   +7 more
doaj   +1 more source

Positive solutions of nonlinear fourth-order boundary-value problems with local and non-local boundary conditions [PDF]

open access: yes, 2008
We establish new existence results for multiple positive solutions of fourth-order nonlinear equations which model deflections of an elastic beam. We consider the widely studied boundary conditions corresponding to clamped and hinged ends and many non ...
J. R. L. Webb   +5 more
core   +1 more source

Qualitative Properties of Positive Solutions of a Kind for Fractional Pantograph Problems using Technique Fixed Point Theory

open access: yesFractal and Fractional, 2022
The current paper intends to report the existence and uniqueness of positive solutions for nonlinear pantograph Caputo–Hadamard fractional differential equations.
Hamid Boulares   +4 more
doaj   +1 more source

Nonlinear integral equations singular in the dependent variable

open access: yesApplied Mathematics Letters, 2007
This paper concerns the existence of nonnegative solutions to the singular integral equation \(y(t)=\int^1_0 k(t,s)[G(s,y(s))+F(s,y(s))]ds\) \((t\in [0,1])\), where \(G\in C([0,1]\times (0,\infty),[0,\infty))\), \(F\in C([0,1]\times [0,\infty),[0,\infty))\) so \(G\) may be singular at \(y=0\).
Donal O'Regan   +2 more
openaire   +3 more sources

Two Numerical Approaches for Nonlinear Weakly Singular Integral Equations

open access: yesCoRR, 2022
25 pages, 4 figures, 4 ...
Mario Ahues   +3 more
openaire   +3 more sources

On the Solution of Quadratic Nonlinear Integral Equation with Different Singular Kernels [PDF]

open access: yesMathematical Problems in Engineering, 2020
All the previous authors discussed the quadratic equation only with continuous kernels by different methods. In this paper, we introduce a mixed nonlinear quadratic integral equation (MQNLIE) with singular kernel in a logarithmic form and Carleman type. An existence and uniqueness of MQNLIE are discussed.
M. Basseem, Ahmad Alalyani
openaire   +2 more sources

Bounded, asymptotically stable, and L^{1} solutions of Caputo fractional differential equations [PDF]

open access: yesOpuscula Mathematica, 2015
The existence of bounded solutions, asymptotically stable solutions, and \(L^1\) solutions of a Caputo fractional differential equation has been studied in this paper.
Muhammad N. Islam
doaj   +1 more source

Monotonic solutions of functional integral and differential equations of fractional order

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
The existence of positive monotonic solutions, in the class of continuous functions, for some nonlinear quadratic integral equations have been studied by J. Banas. Here we are concerned with a singular quadratic functional integral equations.
Ahmed El-Sayed, H. H. G. Hashem
doaj   +1 more source

Singular integral inequalities with several nonlinearities and integral equations with singular kernels [PDF]

open access: yesNonlinear Oscillations, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

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