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Displaying 141 – 160 of 453

Existence and uniqueness of periodic solutions for a model of contaminant flow in porous medium.

Badii, Maurizio (2003)

Rendiconti del Seminario Matematico

Existence and uniqueness of solutions for a degenerate quasilinear parabolic problem.

Maurizio Badii (1994)

Publicacions Matemàtiques

We consider the following quasilinear parabolic equation of degenerate type with convection term ut = φ (u)xx + b(u)x in (-L,0) x (0,T). We solve the associate initial-boundary data problem, with nonlinear flux conditions. This problem describes the evaporation of an incompressible fluid from a homogeneous porous media. The nonlinear condition in x = 0 means that the flow of fluid leaving the porous media depends on variable meteorological conditions and in a nonlinear manner on u. In x = -L we...

Existence and uniqueness of solutions for a three-dimensional thermoelastic system [Book]

Irena Pawłow, Antoni Żochowski (2002)

Existence and Uniqueness of Solutions of Nonlinear Neumann Problems.

C. Bandle, M.A. Pozio, A. Tesei (1988)

Mathematische Zeitschrift

Existence et unicité de la solution pour un système de deux E.D.P.

Lahcen Ghannam (1989)

Publicacions Matemàtiques

We give some results on the existence, uniqueness and regularity of a nonlinear evolution system. This system models the viscoelastic behaviour of unicellular marine alga Acetabularia mediterrania when the calcium concentration varies. We show (with the aid of a fixed-point theorem) that the system admits a unique local solution in time.

Existence of a solution for the initial boundary value problem for a high order parabolic equation in an unbounded domain.

Zaręba, Lech (2006)

Zeszyty Naukowe Uniwersytetu Jagiellońskiego. Universitatis Iagellonicae Acta Mathematica

Existence of extremal periodic solutions for quasilinear parabolic equations.

Carl, Siegfried (1997)

Abstract and Applied Analysis

Existence of global solution for a nonlocal parabolic problem.

El Hachimi, Abderrahmane, Sidi Ammi, Moulay Rchid (2005)

Electronic Journal of Qualitative Theory of Differential Equations [electronic only]

Existence of periodic solutions for semilinear parabolic equations

Norimichi Hirano, Noriko Mizoguchi (1996)

Banach Center Publications

In this paper, we are concerned with the semilinear parabolic equation ∂u/∂t - Δu = g(t,x,u) if $(t, x) \in R_{+} \times Ω$ u = 0 if $(t, x) \in R_{+} \times \partial Ω$ , where $Ω \subset R^{N}$ is a bounded domain with smooth boundary ∂Ω and $g : R_{+} \times \bar{Ω} \times R \to R$ is T-periodic with respect to the first variable. The existence and the multiplicity of T-periodic solutions for this problem are shown when g(t,x,ξ)/ξ lies between two higher eigenvalues of - Δ in Ω with the Dirichlet boundary condition as ξ → ±∞.