Results 21 to 30 of about 6,408,424 (182)

Differential-functional Goursat problem [PDF]

open access: yes, 2007
This paper is devoted to a differential-functional Goursat problem for second-order hyperbolic equations. There are proved existence results based on the Banach and Schauder fixed point theorems with some Bielecki type ...
Wojciechowski, Remigiusz
core   +1 more source

The Riemann method for equations with a dominant partial derivative (A Review) [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
This review article is devoted to a class of linear equations with a dominant (leading) partial derivative of the form \((D+M)u=f\), where \(Du\) is a mixed partial derivative, and \(M\) is a linear differential operator containing the derivatives of the
Aleksey N. Mironov   +2 more
doaj   +1 more source

CONFORMAL SCATTERING AND THE GOURSAT PROBLEM

open access: yesJournal of Hyperbolic Differential Equations, 2004
We work on a class of non-stationary vacuum space-times admitting a conformal compactification that is smooth at null and timelike infinity. Via a conformal transformation, the existence of a scattering operator for field equations is interpreted as the well-posedness of a Goursat problem on null infinity.
Mason, L, Nicolas, J
openaire   +2 more sources

One characteristic problem for the general hyperbolic differential equation of the third order with nonmultiple characteristics

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
In the paper we consider the well-posed characteristic problem for the general hyperbolic differential equation of the third order with nonmultiple characteristics. The solution of this problem is constructed in an explicit form. The illustrative example
J. O. Yakovleva
doaj   +3 more sources

The generalized Goursat-Riemann problem for plane waves in isotropic elastic solids.

open access: yes, 1992
The generalized Goursat-Riemann problem for plane waves in isotropic elastic ...
Tankin. Wang (7961096)
core   +3 more sources

BOUNDARY VALUE PROBLEM FOR A GENERALIZED TELEGRAPH EQUATION OF FRACTIONAL ORDER WITH VARIABLE COEFFICIENTS

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
In this paper, we construct the solution to the Goursat problem for a generalized telegraph equation of fractional order with variable coefficients.
Pshibikhova R. A.
doaj   +1 more source

Initial Value Problems for System of Wave Equations

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2009
We present solutions to the Cauchy problem and the Goursat problem for system of wave equations. Discharged analogue d'Alembert formula for system of wave equations.
S. V. Leksina
doaj   +1 more source

The problem with shift for a degenerate hyperbolic equation of the first kind [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
For a degenerate first-order hyperbolic equation of the second order containing a term with a lower derivative, we study two boundary value problems with an offset that generalize the well-known first and second Darboux problems. Theorems on an existence
Zhiraslan A. Balkizov
doaj   +1 more source

On problems with displacement in boundary conditions for hyperbolic equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
We consider three problems for hyperbolic equation on a plane in the characteristic domain. In these problems at least one of the conditions of the Goursat problem is replaced by nonlocal condition on the relevant characteristic. Non-local conditions are
Elena A Utkina
doaj   +1 more source

On the Representation of the Goursat Boundary Problem Solution for the First Order Partial Derivatives Stochastic Hyperbolic Equations

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
We study the standard canonical form of a stochastic analog of a system of linear partial differential equations of first order hyperbolic type with Goursat boundary conditions.
K.B. Mansimov, R.O. Mastaliyev
doaj   +1 more source

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