A New Green Function Concept for Fourth-order Differential Equations
نویسنده
چکیده
A linear completely nonhomogeneous generally nonlocal multipoint problem is investigated for a fourth-order differential equation with generally nonsmooth coefficients satisfying some general conditions such as pintegrability and boundedness. A system of five integro-algebraic equations called an adjoint system is introduced for this problem. A concept of a Green functional is introduced as a special solution of the adjoint system. This new type of Green function concept, which is more natural than the classical Greentype function concept, and an integral form of the nonhomogeneous problems can be found more naturally. Some applications are given for elastic bending problems.
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