Displaying 101 – 120 of 224

Showing per page

Boundary value problem for an infinite system of second order differential equations in p spaces

Ishfaq Ahmad Malik, Tanweer Jalal (2020)

Mathematica Bohemica

The concept of measures of noncompactness is applied to prove the existence of a solution for a boundary value problem for an infinite system of second order differential equations in p space. We change the boundary value problem into an equivalent system of infinite integral equations and result is obtained by using Darbo’s type fixed point theorem. The result is illustrated with help of an example.

Boundary value problem for differential inclusions in Fréchet spaces with multiple solutions of the homogeneous problem

Irene Benedetti, Luisa Malaguti, Valentina Taddei (2011)

Mathematica Bohemica

The paper deals with the multivalued boundary value problem x ' A ( t , x ) x + F ( t , x ) for a.a. t [ a , b ] , M x ( a ) + N x ( b ) = 0 , in a separable, reflexive Banach space E . The nonlinearity F is weakly upper semicontinuous in x . We prove the existence of global solutions in the Sobolev space W 1 , p ( [ a , b ] , E ) with 1 < p < endowed with the weak topology. We consider the case of multiple solutions of the associated homogeneous linearized problem. An example completes the discussion.

Boundary value problems and periodic solutions for semilinear evolution inclusions

Nikolaos S. Papageorgiou (1994)

Commentationes Mathematicae Universitatis Carolinae

We consider boundary value problems for semilinear evolution inclusions. We establish the existence of extremal solutions. Using that result, we show that the evolution inclusion has periodic extremal trajectories. These results are then applied to closed loop control systems. Finally, an example of a semilinear parabolic distributed parameter control system is worked out in detail.

Boundary value problems for coupled systems of second order differential equations with a singularity of the first kind: explicit solutions

Lucas Jódar (1994)

Applications of Mathematics

In this paper we obtain existence conditions and an explicit closed form expression of the general solution of twopoint boundary value problems for coupled systems of second order differential equations with a singularity of the first kind. The approach is algebraic and is based on a matrix representation of the system as a second order Euler matrix differential equation that avoids the increase of the problem dimension derived from the standard reduction of the order method.

Boundary value problems for differential inclusions with fractional order

Mouffak Benchohra, Samira Hamani (2008)

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

In this paper, we shall establish sufficient conditions for the existence of solutions for a boundary value problem for fractional differential inclusions. Both cases of convex valued and nonconvex valued right hand sides are considered.

Currently displaying 101 – 120 of 224