Results 11 to 20 of about 77 (77)

Numerical modelling challenges for clinical electroporation ablation technique of liver tumors [PDF]

open access: yes, 2020
International audienceElectroporation ablation is a promising non surgical and minimally invasive technique of tumor ablation, for which no monitoring is currently available.
Poignard, Clair   +7 more
core   +2 more sources

Gap localization of TE‐modes by arbitrarily weak defects

open access: yesJournal of the London Mathematical Society, Volume 95, Issue 3, Page 942-962, June 2017., 2017
Abstract This paper considers the propagation of TE‐modes in photonic crystal waveguides. The waveguide is created by introducing a linear defect into a periodic background medium. Both the periodic background problem and the perturbed problem are modelled by a divergence type equation.
B. M. Brown   +4 more
wiley   +1 more source

Multiplicity of Solutions to Elliptic Problems Involving the 1-Laplacian with a Critical Gradient Term

open access: yesAdvanced Nonlinear Studies, 2017
In the present paper we study the Dirichlet problem for an equation involving the 1-Laplacian and a total variation term as reaction.We prove a strong multiplicity result.
Abdellaoui Boumediene   +2 more
doaj   +1 more source

HOMOGENIZATION OF THE SYSTEM OF HIGH‐CONTRAST MAXWELL EQUATIONS

open access: yesMathematika, Volume 61, Issue 2, Page 475-500, May 2015., 2015
We study the system of Maxwell equations for a periodic composite dielectric medium with components whose dielectric permittivities have a high degree of contrast between each other. We assume that the ratio between the permittivities of the components with low and high values of is of the order , where is the period of the medium.
Kirill Cherednichenko, Shane Cooper
wiley   +1 more source

Nonlinear Neumann Boundary Conditions for Quasilinear Degenerate Elliptic Equations and Applications [PDF]

open access: yes, 1999
We prove comparison results between viscosity sub and supersolutions of degenerate elliptic and parabolic equations associated to, possibly nonlinear, Neumann boundary conditions. These results are obtained under more general assumptions on the equation (
Barles, Guy, Guy Barles
core   +1 more source

On a Class of Quasilinear Elliptic Equations with Degenerate Coerciveness and Measure Data

open access: yesAdvanced Nonlinear Studies, 2018
We study the existence of measure-valued solutions for a class of degenerate elliptic equations with measure data. The notion of solution is natural, since it is obtained by a regularization procedure which also relies on a standard approximation of the ...
Smarrazzo Flavia
doaj   +1 more source

On the continuity of principal eigenvalues for boundary value problems with indefinite weight function with respect to radius of balls in ℝN

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 29, Issue 5, Page 279-283, 2002., 2002
We investigate the continuity of principal eigenvalues (i.e., eigenvalues corresponding to positive eigenfunctions) for the boundary value problem −Δu(x) = λg(x)u(x), x ∈ BR(0); u(x) = 0, |x| = R, where BR(0) is a ball in ℝN, and g is a smooth function, and we show that λ1+(R) and λ1−(R) are continuous functions of R.
Ghasem Alizadeh Afrouzi
wiley   +1 more source

Boundedness and monotonicity of principal eigenvalues for boundary value problems with indefinite weight functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 30, Issue 1, Page 25-29, 2002., 2002
We study the principal eigenvalues (i.e., eigenvalues corresponding to positive eigenfunctions) for the boundary value problem: −Δu(x) = λg(x)u(x), x ∈ D; (∂u/∂n)(x) + αu(x) = 0, x ∈ ∂D, where Δ is the standard Laplace operator, D is a bounded domain with smooth boundary, g : D → ℝ is a smooth function which changes sign on D and α ∈ ℝ.
G. A. Afrouzi
wiley   +1 more source

Continuous and Lp estimates for the complex Monge‐Ampère equation on bounded domains in ℂn

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 30, Issue 11, Page 705-707, 2002., 2002
Continuous solutions with continuous data and Lp solutions with Lp data are obtained for the complex Monge‐Ampère equation on bounded domains, without requiring any smoothness of the domains.
Patrick W. Darko
wiley   +1 more source

Strong unique continuation of eigenfunctions for p‐Laplacian operator

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 25, Issue 3, Page 213-216, 2001., 2001
We show the strong unique continuation property of the eigenfunctions for p‐Laplacian operator in the case p < N.
Islam Eddine Hadi, N. Tsouli
wiley   +1 more source

Home - About - Disclaimer - Privacy