Dynamical systems method for solving operator equations

Details Dynamical systems method for solving operator equations Dynamical systems method for solving operator equations

2003-01-31

arxiv.org/abs/math/0301378v1

Mathematics

Dynamical Systems

21pp

Scientific paper

10.1016/S1007-5704(03)00006-6

Consider an operator equation $F(u)=0$ in a real Hilbert space. The problem of solving this equation is ill-posed if the operator $F'(u)$ is not boundedly invertible, and well-posed otherwise. A general method, dynamical systems method (DSM) for solving linear and nonlinear ill-posed problems in a Hilbert space is presented. This method consists of the construction of a nonlinear dynamical system, that is, a Cauchy problem, which has the following properties: 1) it has a global solution, 2) this solution tends to a limit as time tends to infinity, 3) the limit solves the original linear or non-linear problem. New convergence and discretization theorems are obtained. Examples of the applications of this approach are given. The method works for a wide range of well-posed problems as well.

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