Results 21 to 30 of about 12,485 (201)

Filtration in cohesive soils: numerical approach

open access: yesComputer Assisted Methods in Engineering and Science, 2023
Paper presents a numerical method for solving the initial boundary-value problem for a certain quasilinear parabolic equation describing the low velocity filtration problem. The convergence of the method is proved.
Robert Schaefer, Stanislaw Sędziwy
doaj  

Qualitative Analysis of an Optimal Sparse Control Problem for Quasi-Linear Parabolic Equation with Variable Order of Nonlinearity

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
In this work, we study a sparse optimal control problem involving a quasilinear parabolic equation with variable order of nonlinearity as a state equation and with a pointwise control constraints.
Ciro D’Apice   +2 more
doaj   +1 more source

Parabolic regularization of the gradient catastrophes for the Burgers-Hopf equation and Jordan chain

open access: yes, 2018
Non-standard parabolic regularization of gradient catastrophes for the Burgers-Hopf equation is proposed. It is based on the analysis of all (generic and higher order) gradient catastrophes and their step by step regularization by embedding the Burgers ...
Konopelchenko, B. G., Ortenzi, G.
core   +1 more source

On the weak solution of a three-point boundary value problem for a class of parabolic equations with energy specification

open access: yesAbstract and Applied Analysis, 2003
This paper deals with weak solution in weighted Sobolev spaces, of three-point boundary value problems which combine Dirichlet and integral conditions, for linear and quasilinear parabolic equations in a domain with curved lateral boundaries. We, firstly,
Abdelfatah Bouziani
doaj   +1 more source

Convergence of The Relative Value Iteration for the Ergodic Control Problem of Nondegenerate Diffusions under Near-Monotone Costs

open access: yes, 2013
We study the relative value iteration for the ergodic control problem under a near-monotone running cost structure for a nondegenerate diffusion controlled through its drift.
Arapostathis, Ari   +2 more
core   +2 more sources

Quasivariational solutions for first order quasilinear equations with gradient constraint [PDF]

open access: yes, 2012
We prove the existence of solutions for an evolution quasi-variational inequality with a first order quasilinear operator and a variable convex set, which is characterized by a constraint on the absolute value of the gradient that depends on the solution
A. Azevedo   +21 more
core   +2 more sources

Uniform Bounds for Solutions to Quasilinear Parabolic Equations

open access: yesJournal of Differential Equations, 2001
The authors consider a class of quasilinear parabolic equations on a domain \(D \subset \mathbb{R}^d\) of finite Lebesgue measure in the form \[ u_t(t,x) = \text{div\,} a(t,x,u(t,x), \nabla u(t,x)); \quad t \in (0,\infty),\;x \in D. \] where \(a : (0,\infty)\times D \times \mathbb{R} \times \mathbb{R}^d \to \mathbb{R}^d\) is a Carathéodory function ...
CIPRIANI, FABIO EUGENIO GIOVANNI   +1 more
openaire   +3 more sources

Optimal control of quasilinear parabolic equations [PDF]

open access: yesProceedings of the Royal Society of Edinburgh: Section A Mathematics, 1995
This paper deals with optimal control problems governed by quasilinear parabolic equations in divergence form, whose cost functional is of Lagrangian type. Our aim is to prove the existence of solutions and derive some optimality conditions. To attain this second objective, we accomplish the sensitivity analysis of the state equation with respect to ...
Casas, Eduardo   +2 more
openaire   +2 more sources

Abstract quasilinear parabolic equations

open access: yesMathematische Annalen, 1984
The author deals with an abstract quasilinear parabolic problem \(u'(t)=A(t,u(t))u(t)+f(t,u(t)), t>0\), \(u(0)=u_ 0\) in a Banach space X. His theorems on existence and uniqueness are such that a concrete quasilinear parabolic problem can be attacked without imposing growth conditions on the coefficients.
openaire   +1 more source

Global regularity of weak solutions to quasilinear elliptic and parabolic equations with controlled growth

open access: yes, 2010
We establish global regularity for weak solutions to quasilinear divergence form elliptic and parabolic equations over Lipschitz domains with controlled growth conditions on low order terms.
Arkhipova A.A.   +26 more
core   +1 more source

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