R-K type Landweber method for nonlinear ill-posed problems

  • Authors:
  • L. Li;B. Han;W. Wang

  • Affiliations:
  • Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China;Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China;Department of Mathematics, Harbin Institute of Technology, Harbin 150001, China

  • Venue:
  • Journal of Computational and Applied Mathematics
  • Year:
  • 2007

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Abstract

In this paper we propose the R-K type Landweber iteration and investigate the convergence of the method for nonlinear ill-posed problem F(x)=y where F:H-H is a nonlinear operator between Hilbert space H. Moreover, for perturbed data with noise level @d we prove that the convergence rate is O(@d^2^/^3) under appropriate conditions. Finally, the numerical performance of this R-K type Landweber iteration for a nonlinear convolution equation is compared with the Landweber iteration.