Results 41 to 50 of about 579,120 (288)

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

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

Constraint-preserving boundary treatment for a harmonic formulation of the Einstein equations [PDF]

open access: yes, 2008
We present a set of well-posed constraint-preserving boundary conditions for a first-order in time, second-order in space, harmonic formulation of the Einstein equations.
  +23 more
core   +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

Boundary element methods for potential problems with nonlinear boundary conditions [PDF]

open access: yesMathematics of Computation, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ganesh, M., Steinbach, O.
openaire   +2 more sources

Balanced Truncation Model Reduction of a Nonlinear Cable-Mass PDE System with Interior Damping

open access: yes, 2018
We consider model order reduction of a nonlinear cable-mass system modeled by a 1D wave equation with interior damping and dynamic boundary conditions. The system is driven by a time dependent forcing input to a linear mass-spring system at one boundary.
Batten, Belinda A.   +3 more
core   +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 ...
Franco, D., Infante, G., Webb, J.R.L.
core   +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  

Boundary Value Problems For Integrable Equations Compatible With The Symmetry Algebra [PDF]

open access: yes, 1994
Boundary value problems for integrable nonlinear partial differential equations are considered from the symmetry point of view. Families of boundary conditions compatible with the Harry-Dym, KdV and MKdV equations and the Volterra chain are discussed. We
Burak Gürel   +4 more
core   +2 more sources

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