On uniform convexity, total convexity and convergence of the proximal point and outer Bregman projection algorithms in Banach spaces

Dan Butnariu, Alfredo N. Iusem, Constantin Za̧linescu

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper we study and compare the notions of uniform convexity of functions at a point and on bounded sets with the notions of total convexity at a point and sequential consistency of functions, respectively. We establish connections between these concepts of strict convexity in infinite dimensional settings and use the connections in order to obtain improved convergence results concerning the outer Bregman projection algorithm for solving convex feasibility problems and the generalized proximal point algorithm for optimization in Banach spaces.

Original languageEnglish
Pages (from-to)35-61
Number of pages27
JournalJournal of Convex Analysis
Volume10
Issue number1
StatePublished - 2003

Keywords

  • Generalized proximal point algorithm for optimization
  • Outer Bregman projection algorithm for feasibility
  • Sequential consistency
  • Total convexity at a point
  • Uniform convexity at a point
  • Uniform convexity on bounded sets

ASJC Scopus subject areas

  • Analysis
  • General Mathematics

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