Results 21 to 30 of about 504,503 (314)

Existence of a Solution of a Certain Volterra –Fredholm Integro Differential Equations [PDF]

open access: yesمجلة التربية والعلم, 2012
In this paper, e investigate the existence of global solution for nonlinear mixed Volterra–Fredholm integro differential equation with nonlocal condition in Banach space. Our results depend on Leray –Schauder alternative theorem.
Akram H. Mahmood, Lamyaa H. Sadoon
doaj   +1 more source

Existence of solutions to a regularized model of dynamic fracture [PDF]

open access: yes, 2010
Existence and convergence results are proved for a regularized model of dynamic brittle fracture based on the Ambrosio–Tortorelli approximation. We show that the sequence of solutions to the time-discrete elastodynamics, proposed by Bourdin, Larsen ...
Larsen, CJ   +8 more
core   +1 more source

Existence of the solution to a nonlocal-in-time evolutional problem

open access: yesNonlinear Analysis, 2014
This work is devoted to the study of a nonlocal-in-time evolutional problem for the first order differential equation in Banach space. Our primary approach, although stems from the convenient technique based on the reduction of a nonlocal problem to its ...
Volodymyr Makarov   +2 more
doaj   +1 more source

On the existence of solutions for nonlinear parabolic problems with nonmonotone discontinuities

open access: yes, 1997
In this paper we consider a nonlinear parabolic problem with a discontinuous, nonmonotone nonlinearity. We assume the existence of an upper solution ϕ and a lower solution ψ such that ψ≤ϕ.
Papageorgiou, NS   +1 more
core   +1 more source

Existence of solutions for second-order evolution inclusions

open access: yes, 1993
In this paper we examine second-order nonlinear evolution inclusions and prove two existence theorems; one with a convex-valued orientor field and the other with a nonconvex-valued field. An example of a hyperbolic partial differen-tial inclusion is also
Papageorgiou, N   +2 more
core   +1 more source

Existence of a solution for a class of nonlinear parabolic systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2007
An existence result of a solution for a class of nonlinear parabolic systems is established. The data belong to $L^1$ and no growth assumption is made on the nonlinearities.
Hicham Redwane
doaj   +1 more source

Global existence of solution to a nonlocal parabolic problem modeling linear friction welding

open access: yes, 2012
We study a nonlocal parabolic problem airing in the modeling of linear friction welding. Using some a priori estimates, we derive the global in time existence of solution of this nonlocal problem ...
Guo, Lin Yung-Jen   +4 more
core   +1 more source

A procedure for determining necessary and sufficient conditions for the existence of a solution to the multi-index problem [PDF]

open access: yes, 1974
summary:A procedure is given which will give the necessary and sufficient conditions for the existence of a solution to the multi-index problem of any given dimensions.
Smith, Graham
core   +1 more source

Existence of solutions for nonlinear parabolic problems [PDF]

open access: yes, 1999
summary:We consider nonlinear parabolic boundary value problems. First we assume that the right hand side term is discontinuous and nonmonotone and in order to have an existence theory we pass to a multivalued version by filling in the gaps at the ...
Papageorgiou, N   +3 more
core  

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