Results 11 to 20 of about 68 (42)

Decomposition theorem and Riesz basis for axisymmetric potenials in the right hal-plane [PDF]

open access: yes, 2014
The Weinstein equation with complex coefficients is the equation governing generalized axisymmetric potentials (GASP) which can be written as $L_m[u]=\Delta u+\left(m/x\right)\partial_x u =0$, where $m\in\mathbb{C}$. We generalize results known for $m\in\
Chaabi, Slah, Rigat, Stephane
core   +2 more sources

Symmetry analysis of an acid-mediated cancer invasion model [PDF]

open access: yes, 2022
Under investigation in this paper is a reaction-diffusion system, which describes acid-mediated tumor growth. First, in view of Lie group analysis, infinitesimal generators of the considered system are presented.
Ben Gao, Juya Cui
core   +1 more source

Theoretical aspects and numerical computation of the time-harmonic Green's function for an isotropic elastic half-plane with an impedance boundary condition [PDF]

open access: yes, 2010
International audienceThis work presents an effective and accurate method for determining, from a theoretical and computational point of view, the time-harmonic Green's function of an isotropic elastic half-plane where an impedance boundary condition is ...
Duran, Mario   +2 more
core   +4 more sources

Boundary ellipticity and limiting $L^1$-estimates on halfspaces

open access: yes, 2022
We identify necessary and sufficient conditions on $k$th order differential operators $\mathbb{A}$ in terms of a fixed halfspace $H^+\subset\mathbb{R}^n$ such that the Gagliardo--Nirenberg--Sobolev inequality $$ \|D^{k-1}u\|_{\mathrm{L}^{\frac{n}{n-1}
Gmeineder, Franz   +2 more
core   +1 more source

Primary ideals and their differential equations [PDF]

open access: yes, 2020
An ideal in a polynomial ring encodes a system of linear partial differential equations with constant coefficients. Primary decomposition organizes the solutions to the PDE.
Cid Ruiz, Yairon   +2 more
core   +2 more sources

Traveling synchronized asymmetric two-waves in the propagation of the KdV and mKdV equations incorporating time-space dispersion terms

open access: yesPartial Differential Equations in Applied Mathematics
Joseph and Egri revised the standard Korteweg-de Vries equation by replacing its third-order space dispersion term by space-time dispersions aiming to adjust the wave speed and preserve frequency stability. The aim of the current study is twofold. First,
Marwan Alquran, Imad Jaradat
doaj   +1 more source

On asymptotic effects of boundary perturbations in exponentially shaped Josephson junctions

open access: yes, 2014
A parabolic integro differential operator L, suitable to describe many phenomena in various physical fields, is considered. By means of equivalence between L and the third order equation describing the evolution inside an exponentially shaped Josephson ...
De Angelis, Monica, Renno, Pasquale
core   +1 more source

Propagation Speed of the Maximum of the Fundamental Solution to the Fractional Diffusion-Wave Equation

open access: yes, 2013
In this paper, the one-dimensional time-fractional diffusion-wave equation with the fractional derivative of order $1 \le \alpha \le 2$ is revisited. This equation interpolates between the diffusion and the wave equations that behave quite differently ...
Buckwar   +34 more
core   +1 more source

Right inverses for linear, constant coefficient partial differential operators on distributions over open half spaces [PDF]

open access: yes, 1997
Results of Hörmander on evolution operators together with a characterization of the present authors [Ann. Inst. Fourier, Grenoble 40, 619 – 655 (1990)] are used to prove the following: Let and denote by its principal part.
Meise, Reinhold   +2 more
core   +1 more source

Fundamental Solutions and Decay of Fully Non-local Problems

open access: yes, 2018
In this paper, we study a fully non-local reaction-diffusion equation which is non-local both in time and space. We apply subordination principles to construct the fundamental solutions of this problem, which we use to find a representation of the mild ...
Pozo, Juan C., Vergara, Vicente
core   +1 more source

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