Results 31 to 40 of about 2,128,627 (261)

Scaling in Nonlinear Parabolic Equations

open access: yesJournal of Mathematical Analysis and Applications, 1999
The Cauchy problem for parabolic equations with quadratic nonlinearity is studied. We investigate the existence of global-in-time solutions and their large-time behavior assuming some scaling property of the equation as well as of the norm of the Banach space in which the solutions are constructed.
openaire   +1 more source

Numerical methods for ordinary differential equations with applications to partial differential equations [PDF]

open access: yes, 1983
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The thesis develops a number of algorithms for the numerical solution of ordinary differential equations with applications to partial differential equations.
Khaliq, Abdul Qayyum Masud
core   +6 more sources

Nonlinear Parabolic Equations with Measure Data

open access: yesJournal of Functional Analysis, 1997
Consider the parabolic problem \[ u_t -\mathop{div} a(x,t,u,Du) = \mu \quad\text{in } Q,\qquad u = 0 \quad \text{on } \mathcal PQ, \] where \(a(x,t,z,\xi)\) behaves like \(|\xi|^{p-2}\xi\), \(Q\) is a space-time cylinder with parabolic boundary \(\mathcal PQ\), and \(\mu\) is a measure on \(Q\).
BOCCARDO, Lucio   +3 more
openaire   +3 more sources

Bounded Solutions to Nonlinear Parabolic Equations [PDF]

open access: yesISRN Mathematical Analysis, 2011
We deal with existence results for nonlinear parabolic equations with general quadratic gradient terms and with absorption term which depend on the solution. We note that no boundedness is assumed on the data of the problem. We prove an existence result of distributional solution via test-function method.
openaire   +2 more sources

Global existence for fully parabolic boundary value problems

open access: yes, 2006
We present some results on the global existence of classical solutions for quasilinear parabolic equations with nonlinear dynamic boundary conditions in bounded domains with a smooth ...
Constantin, Adrian   +3 more
core   +2 more sources

Nonlinear Parabolic Equations with Regularized Derivatives

open access: yesJournal of Mathematical Analysis and Applications, 1999
Nonlinear systems of differential equations \[ \partial_tu+\partial_xf(u)+g(u)=\Delta u\tag{1} \] are considered on \(\mathbb R_+^{n+1}\) \((t>0)\), where \(u=(u_1,\dots,u_m)^T\), \(f(u)=(f_1(u),\dots,f_n(u))^T\), \(\partial_xf(u)=\sum_{i=1}^n\partial_{x_i}f_i(u)\).
Wang, Y.G., Oberguggenberger, M.
openaire   +1 more source

Degenerate parabolic equations appearing in atmospheric dispersion of pollutants

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
Linear and nonlinear degenerate abstract parabolic equations with variable coefficients are studied. Here the equation and boundary conditions are degenerated on all boundary and contain some parameters.
Veli Shakhmurov, Aida Sahmurova
doaj   +1 more source

Positivity of solutions to the Cauchy problem for linear and semilinear biharmonic heat equations

open access: yesAdvances in Nonlinear Analysis, 2020
This paper is concerned with the positivity of solutions to the Cauchy problem for linear and nonlinear parabolic equations with the biharmonic operator as fourth order elliptic principal part. Generally, Cauchy problems for parabolic equations of fourth
Grunau Hans-Christoph   +2 more
doaj   +1 more source

To the uniqueness problem for nonlinear parabolic equations

open access: yesDiscrete and Continuous Dynamical Systems, 2004
Preprint: Weierstraß-Institut für Angewandte Analysis und Stochastik, vol ...
Skrypnik, Igor V., Gajewski, Herbert
openaire   +3 more sources

Doubly nonlinear parabolic equations

open access: yes, 2020
The public defense on 15th May 2020 at 12:00 will be organized via remote technology. Link: https://aalto.zoom.us/j/66291986278 Zoom Quick Guide: https://www.aalto.fi/en/services/zoom-quick-guideThis thesis is devoted to the study of the existence and ...
Vestberg, Matias
core   +1 more source

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