Results 31 to 40 of about 88,453 (147)

On numerical methods for one problem of mixed type

open access: yesMathematical Modelling and Analysis, 2001
This article is devoted to further investigation of numerical methods for one differential problem of mixed type. We consider a two‐dimensional first‐order differential equation with one complex‐valued and one real constant coefficients.
S. Sytova
doaj   +1 more source

Self-similar shock wave solutions of the non-linear Maxwell equations

open access: yes, 2014
In our study we consider nonlinear, power-law field-dependent electrical permitivity and magnetic permeability and investigate the time-dependent Maxwell equations with the self-similar Ansatz.
Barna, I. F.
core   +1 more source

Nonlinear monotonization of the Babenko scheme for the quasi‐linear advection equation

open access: yesMathematical Modelling and Analysis, 2005
The paper is devoted to construction and development of new method for numerical solution of hyperbolic type equations [14, 17]. In the previous papers [4, 5, 6, 7, 8, 9] authors have investigated theoretically and tested experimentally 26 different ...
T. A. Alexandrikova, M. P. Galanin
doaj   +1 more source

Blow-up for solutions of hyperbolic PDE and spacetime singularities [PDF]

open access: yes, 2000
An important question in mathematical relativity theory is that of the nature of spacetime singularities. The equations of general relativity, the Einstein equations, are essentially hyperbolic in nature and the study of spacetime singularities is ...
Rendall, Alan D.
core   +5 more sources

A parabolic-hyperbolic free boundary problem modeling tumor growth with drug application

open access: yesElectronic Journal of Differential Equations, 2010
In this article, we study a free boundary problem modeling the growth of tumors with drug application. The model consists of two nonlinear second-order parabolic equations describing the diffusion of nutrient and drug concentration, and three ...
Ji-Hong Zhao
doaj  

Filtration in porous rock with initial deposit [PDF]

open access: yesE3S Web of Conferences, 2019
The problems of underground fluid mechanics play an important role in the design and preparation for the construction of tunnels and underground structures. To strengthen the insecure soil a grout solution is pumped under pressure in the porous rock. The
Osipov Yuri, Galaguz Yuri
doaj   +1 more source

Very High Order $\PNM$ Schemes on Unstructured Meshes for the Resistive Relativistic MHD Equations

open access: yes, 2009
In this paper we propose the first better than second order accurate method in space and time for the numerical solution of the resistive relativistic magnetohydrodynamics (RRMHD) equations on unstructured meshes in multiple space dimensions.
Dumbser, Michael, Zanotti, Olindo
core   +1 more source

Existence of bounded solutions for nonlinear hyperbolic partial differential equations

open access: yesElectronic Journal of Differential Equations, 2015
In this article we first establish a new representation formula for bounded solutions to a class of nonlinear second-order hyperbolic partial differential equations.
Toka Diagana, Mamadou Moustapha Mbaye
doaj  

A scaled characteristics method for the asymptotic solution of weakly nonlinear wave equations

open access: yesElectronic Journal of Differential Equations, 1998
We formulate a multi-scale perturbation technique to asymptotically solve weakly nonlinear hyperbolic equations. The method is based on a set of scaled characteristic coordinates.
Chirakkal V. Easwaran
doaj  

Explicit Exact Solutions of the (2+1)-Dimensional Integro-Differential Jaulent–Miodek Evolution Equation Using the Reliable Methods

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2020
In this article, we utilize the G′/G2-expansion method and the Jacobi elliptic equation method to analytically solve the (2 + 1)-dimensional integro-differential Jaulent–Miodek equation for exact solutions.
Supaporn Kaewta   +2 more
doaj   +1 more source

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