Results 21 to 30 of about 58,805 (277)

Positive solutions for a system of Riemann-Liouville fractional differential equations with multi-point fractional boundary conditions

Boundary Value Problems, 2017
We study the existence and nonexistence of positive solutions for a system of nonlinear Riemann-Liouville fractional differential equations subject to multi-point boundary conditions which contain fractional derivatives.
Rodica Luca
doaj   +1 more source

A Perturbed Cauchy Viscoelastic Problem in an Exterior Domain

Mathematics, 2023
A Cauchy viscoelastic problem perturbed by an inverse-square potential, and posed in an exterior domain of RN, is considered under a Dirichlet boundary condition.
Bessem Samet, Calogero Vetro
doaj   +1 more source

A Time-Fractional Differential Inequality of Sobolev Type on an Annulus

Axioms, 2023
Several phenomena from natural sciences can be described by partial differential equations of Sobolev-type. On the other hand, it was shown that in many cases, the use of fractional derivatives provides a more realistic model than the use of standard ...
Amal Alshabanat, Eman Almoalim, Mohamed Jleli, Bessem Samet   +3 more
doaj   +1 more source

On Global Solutions to a ψ-Caputo Fractional Inequality

Fractal and Fractional
This paper investigates the absence of globally defined, non-trivial solutions for some fractional differential inequalities of the ψ-Caputo type, with polynomial sources involving fractional derivatives.
Mohammed D. Kassim
doaj   +1 more source

Nonexistence of Positive Solutions for Quasilinear Equations with Decaying Potentials

Mathematics, 2020
In this paper, we consider a quasilinear Schrödinger equation, which arises from the study of the superfluid film equation in plasma physics. Our main goal is to find the growth condition for nonlinear term and decaying condition for the potential ...
Ohsang Kwon
doaj   +1 more source

Nonexistence of small, odd breathers for a class of nonlinear wave equations

, 2016
In this note, we show that for a large class of nonlinear wave equations with odd nonlinearities, any globally defined odd solution which is small in the energy space decays to $0$ in the local energy norm.
Kowalczyk, Michał, Martel, Yvan, Muñoz, Claudio   +2 more
core   +3 more sources

Nonexistence of D(4)-quintuples [PDF]

Journal of Number Theory, 2019
In this paper we prove a conjecture that $D(4)$-quintuple does not exist using both classical and new methods. Also, we give a new version of the Rickert's theorem that can be applied on some $D(4)$-quadruples.
Marija Bliznac Trebješanin, Alan Filipin   +1 more
openaire   +5 more sources

Nonexistence of self-similar singularities for the 3D incompressible Euler equations

, 2006
We prove that there exists no self-similar finite time blowing up solution to the 3D incompressible Euler equations. By similar method we also show nonexistence of self-similar blowing up solutions to the divergence-free transport equation in $\Bbb R^n$.
A. Majda, D. Chae, D. Chae, D. Chae, D. Córdoba, D. Córdoba, D. Córdoba, D. Córdoba, Dongho Chae, H. Beirāo da Veiga, J. Deng, J. Leray, J. Nečas, J.M. Greene, J.T. Beale, P. Constantin, P. Constantin, P. Constantin, P. Constantin, R.B. Pelz, T-P. Tsai, W. E, X. Saint Raymond, Y. Pomeau   +23 more
core   +4 more sources

Do outgrower schemes enhance technology adoption and productivity? Evidence from maize farmers in Northern Ghana

Agribusiness, EarlyView.
Abstract Nucleus outgrower schemes are contractual arrangements where well‐resourced large‐scale farmers (nucleus farmers) are empowered by development support agencies to take charge of smallholder farmers, by providing them with market access and the necessary training on agronomic practices and farm inputs for production.
Dominic Tasila Konja, Awudu Abdulai
wiley   +1 more source

Positive solutions for a system of fractional differential equations with p-Laplacian operator and multi-point boundary conditions

Nonlinear Analysis, 2018
We investigate the existence and nonexistence of positive solutions for a system of nonlinear Riemann–Liouville fractional differential equations with parameters and p-Laplacian operator subject to multi-point boundary conditions, which contain ...
Rodica Luca
doaj   +1 more source