EuDML | Browse

Items

All a b c d e f g h i j k l m n o p q r s t u v w x y z Other

Previous Page 21 Next

Displaying 401 – 420 of 486

Time periodic solutions to a nonhomogeneous Dirichlet periodic problem.

El Hachimi, Abderrahmane, Alaoui, Abdelilah Lamrani (2008)

Applied Mathematics E-Notes [electronic only]

Time-dependent Stokes equations with measure data.

Bui An Ton (2003)

Abstract and Applied Analysis

Time-periodic solutions of quasilinear parabolic differential equations II. Oblique derivative boundary conditions

Gary Lieberman (2000)

Banach Center Publications

We study boundary value problems for quasilinear parabolic equations when the initial condition is replaced by periodicity in the time variable. Our approach is to relate the theory of such problems to the classical theory for initial-boundary value problems. In the process, we generalize many previously known results.

Topological properties of nonlinear evolution equations

Ďurikovič, Vladimír, Ďurikovičová, Monika (2002)

Equadiff 10

Un Principio De Anti-Maximo Para Ecuaciones Parabolicas Periodicas.

Gerhard Schleinkofer (1987)

Revista colombiana de matematicas

Un problème mixte non-linéaire parabolique provenant de la génétique des populations

Norio Shimakura (1988)

Journées équations aux dérivées partielles

Une approche élémentaire de quelques résultats de symétrisation

P. L. Lions (1986/1987)

Séminaire Équations aux dérivées partielles (Polytechnique)

Uniform null-controllability for the one-dimensional heat equation with rapidly oscillating periodic density

A. López, E. Zuazua (2002)

Annales de l'I.H.P. Analyse non linéaire

Unique localization of unknown boundaries in a conducting medium from boundary measurements

Bruno Canuto (2002)

ESAIM: Control, Optimisation and Calculus of Variations

We consider the problem of localizing an inaccessible piece $I$ of the boundary of a conducting medium $Ω$ , and a cavity $D$ contained in $Ω$ , from boundary measurements on the accessible part $A$ of $\partial Ω$ . Assuming that $g (t, σ)$ is the given thermal flux for $(t, σ) \in (0, T) \times A$ , and that the corresponding output datum is the temperature $u (T_{0}, σ)$ measured at a given time $T_{0}$ for $σ \in A_{out} \subset A$ , we prove that $I$ and $D$ are uniquely localized from knowledge of all possible pairs of input-output data $(g, u {(T_{0})}_{∣ A_{out}})$ . The same result holds when a mean value of the temperature...

Unique Localization of Unknown Boundaries in a Conducting Medium from Boundary Measurements

Bruno Canuto (2010)

ESAIM: Control, Optimisation and Calculus of Variations

We consider the problem of localizing an inaccessible piece I of the boundary of a conducting medium Ω, and a cavity D contained in Ω, from boundary measurements on the accessible part A of ∂Ω. Assuming that g(t,σ) is the given thermal flux for (t,σ) ∈ (0,T) x A, and that the corresponding output datum is the temperature u(T0,σ) measured at a given time T0 for σ ∈ Aout ⊂ A, we prove that I and D are uniquely localized from knowledge of all possible pairs of input-output data $(g, u {(T_{0})}_{∣ A_{out}})$ . The same result...

Uniqueness and stability of solutions for a type of parabolic boundary value problem.

Gonzalez-Velasco, Enrique A. (1989)

International Journal of Mathematics and Mathematical Sciences

Uniqueness of solutions of a mixed problem for parabolic differential-functional equations

J. Szarski (1973)

Annales Polonici Mathematici

Vorzeichenstabile Differenzenverfahren für parabolische Anfangsrandwertaufgaben.

K. Glasshoff, H. Kreth (1980)

Numerische Mathematik

Weak solutions to a time-dependent heat equation with nonlocal radiation boundary condition and arbitrary $p$ -summable right-hand side

Pierre-Etienne Druet (2010)

Applications of Mathematics

We consider a model for transient conductive-radiative heat transfer in grey materials. Since the domain contains an enclosed cavity, nonlocal radiation boundary conditions for the conductive heat-flux are taken into account. We generalize known existence and uniqueness results to the practically relevant case of lower integrable heat-sources, and of nonsmooth interfaces. We obtain energy estimates that involve only the $L^{p}$ norm of the heat sources for exponents $p$ close to one. Such estimates are...

Wentzell Boundary Conditions in the Nonsymmetric Case

A. Favini, G. R. Goldstein, J. A. Goldstein, S. Romanelli (2008)

Mathematical Modelling of Natural Phenomena

Let L be a nonsymmetric second order uniformly elliptic operator with generalWentzell boundary conditions. We show that a suitable version of L generates a quasicontractive semigroup on an Lp space that incorporates both the underlying domain and its boundary. This extends the earlier work of the authors on the symmetric case.