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- W2608002023 abstract "In this paper we study the existence and uniqueness of a solution and propose an iterative method for solving a beam problem which is described by the fully fourth order equation $$u^{(4)}(x)=f(x,u(x),u'(x),u'''(x),u'''(x)), quad 0 < x < 1$$ associated with the Dirichlet boundary conditions. This problem was studied by several authors. Here we propose a novel approach by the reduction of the problem to an operator equation for the triplet of the nonlinear term $varphi (x)=f(x,u(x),u'(x),u''(x),u'''(x))$ and the unknown values $u''(0), u''(1).$ Under some easily verified conditions on the function $f$ in a specified bounded domain, we prove the contraction of the operator. This guarantees the existence and uniqueness of a solution and the convergence of an iterative method for finding it. Many examples demonstrate the applicability of the theoretical results and the efficiency of the iterative method. The advantages of the obtained results over those of Agarwal are shown on some examples." @default.
- W2608002023 created "2017-05-05" @default.
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- W2608002023 date "2017-04-22" @default.
- W2608002023 modified "2023-09-27" @default.
- W2608002023 title "Existence results and numerical solution for the Dirichlet problem for fully fourth order nonlinear equation" @default.
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