A modified successive projection method for Mann’s iteration process

  • Songnian HeEmail author
  • Zhuo Yang


Mann’s iteration process, which is often used to solve the fixed point problems of nonexpansive mappings, has only weak convergence in infinite-dimensional Hilbert spaces. One way to overcome this weakness is the hybrid method proposed by Nakajo and Takahashi in 2003. But the hybrid method is difficult to implement, since the projection operator on an intersection of the domain and two half-spaces in each step has no closed-form formulae in general. A modified successive projection method for Mann’s iteration process proposed in this paper not only has strong convergence, but also is easy to implement. Therefore, our method effectively improves the hybrid method. We also extend our method to solve the nonexpansive semigroup problems. The numerical results show the superiority of the method in this paper.


Successive projection method nonexpansive mapping nonexpansive semigroup strong convergence hybrid method metric projection 

Mathematics Subject Classification

47H09 47H10 65K10 



Many thanks to the reviewers for their valuable comments and suggestions.


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Authors and Affiliations

  1. 1.College of ScienceCivil Aviation University of ChinaTianjinChina

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