Results 21 to 30 of about 61,566 (312)

Existence and uniqueness of solutions for a class of higher-order fractional boundary value problems with the nonlinear term satisfying some inequalities

open access: yesJournal of Inequalities and Applications, 2020
This paper focuses on a class of hider-order nonlinear fractional boundary value problems. The boundary conditions contain Riemann–Stieltjes integral and nonlocal multipoint boundary conditions.
Fang Wang, Lishan Liu, Yonghong Wu
doaj   +1 more source

On parametrized problems with non-linear boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2004
We consider a parametrized boundary-value problem containing an unknown parameter both in the non-linear ordinary differential equations and in the non-linear boundary conditions. By using a suitable change of variables, we reduce the original problem to
Miklós Rontó, Nataliya Shchobak
doaj   +1 more source

New results and applications on the existence results for nonlinear coupled systems

open access: yesAdvances in Difference Equations, 2021
In this manuscript, we study a certain classical second-order fully nonlinear coupled system with generalized nonlinear coupled boundary conditions satisfying the monotone assumptions.
Imran Talib   +4 more
doaj   +1 more source

Smoothing for Nonlinear Parabolic Equations with Nonlinear Boundary Conditions

open access: yesJournal of Mathematical Analysis and Applications, 1997
The authors are concerned with smoothing effects for a class of nonlinear partial differential equations of parabolic type. They extend some known properties of the solution in the linear case, to their nonlinear case. Such properties are: \(u_t(\cdot, t)\to 0\) as \(t\to \infty\) in the \(L^2\)-norm, and \(u(\cdot,t)\) is bounded on \((0,\infty ...
Goldstein, Gisèle Ruiz   +1 more
openaire   +2 more sources

Parabolic Problems with Nonlinear Boundary Conditions and Critical Nonlinearities

open access: yesJournal of Differential Equations, 1999
The authors study the nonlinear parabolic problem \[ \begin{gathered} \frac {\partial u}{\partial t} =\Delta u + f(u) \text{ in } \Omega\times(0,T), \\ \frac {\partial u}{\partial \nu} = g(u) \text{ on } \partial\Omega\times(0,T), \\ u(\cdot,0) = u_0 \text{ in } \Omega, \end{gathered} \] where \(\Omega \subset \mathbb R^N\) has unit outer normal \(\nu\)
Arrieta, José M   +2 more
openaire   +1 more source

Blow-Up Phenomena for Nonlinear Reaction-Diffusion Equations under Nonlinear Boundary Conditions

open access: yesJournal of Function Spaces, 2016
This paper deals with blow-up and global solutions of the following nonlinear reaction-diffusion equations under nonlinear boundary conditions: g(u)t=∇·au∇u+fu  in  Ω×0,T,  ∂u/∂n=bx,u,t  on  ∂Ω×(0,T),  u(x,0)=u0(x)>0,  in  Ω¯, where Ω⊂RN  (N≥2) is a ...
Juntang Ding
doaj   +1 more source

Existence and uniqueness of solutions for the system of integro-differential equations with three-point and nonlinear integral boundary conditions

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2020
The paper examines a system of nonlinear integro-differential equations with three-point and nonlinear integral boundary conditions. The original problem demonstrated to be equivalent to integral equations by using Green function.
M.J. Mardanov   +2 more
doaj   +1 more source

Quasilinear equations involving nonlinear Neumann boundary conditions

open access: yesDifferential and Integral Equations, 2012
26
Iturriaga, Leonelo   +3 more
openaire   +6 more sources

Unsteady nonlinear panel method with mixed boundary conditions [PDF]

open access: yesFME Transactions, 2021
A new panel method had been developed to account for unsteady nonlinear subsonic flow. Two boundary conditions were used to solve the potential flow about complex configurations of airplanes.
Hamid Ali Anmar
doaj  

Second order systems with nonlinear boundary conditions [PDF]

open access: yesProceedings of the American Mathematical Society, 1977
Some existence theorems are established for nonlinear second order systems with nonlinear two point boundary conditions. The system is assumed to satisfy certain differential inequality conditions at the boundary of a region.
openaire   +2 more sources

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