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Every maximally monotone operator of Fitzpatrick–Phelps type is actually of dense type

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We show that every maximally monotone operator of Fitzpatrick–Phelps type defined on a real Banach space must be of dense type. This provides an affirmative answer to a question posed by Stephen Simons in 2001 and implies that various important notions of monotonicity coincide.

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References

  1. Bauschke, H.H., Borwein, J.M., Wang, X., Yao L.: For maximally monotone linear relations, dense type, negative-infimum type, and Fitzpatrick–Phelps type all coincide with monotonicity of the adjoint, submitted; http://arxiv.org/abs/1103.6239v1 (2011)

  2. Bauschke H.H., Combettes P.L.: Convex Analysis and Monotone Operator Theory in Hilbert Spaces. Springer, Berlin (2011)

    Book  MATH  Google Scholar 

  3. Borwein J.M.: Maximal monotonicity via convex analysis. J. Convex Anal. 13, 561–586 (2006)

    MathSciNet  MATH  Google Scholar 

  4. Borwein J.M.: Maximality of sums of two maximal monotone operators in general Banach space. Proc. Am. Math. Soc. 135, 3917–3924 (2007)

    Article  MATH  Google Scholar 

  5. Borwein J.M.: Fifty years of maximal monotonicity. Optim. Lett. 4, 473–490 (2010)

    Article  MathSciNet  MATH  Google Scholar 

  6. Borwein J.M., Vanderwerff J.D.: Convex Functions. Cambridge University Press, Cambridge (2010)

    MATH  Google Scholar 

  7. Burachik R.S., Iusem A.N.: Set-Valued Mappings and Enlargements of Monotone Operators. Springer, Berlin (2008)

    Google Scholar 

  8. Fabian M., Habala P., Hájek P., Montesinos Santalucía V., Pelant J., Zizler V.: Functional Analysis and Infinite-Dimensional Geometry. Springer, Berlin (2001)

    MATH  Google Scholar 

  9. Fitzpatrick, S.: Representing monotone operators by convex functions. In: Workshop/Miniconference on Functional Analysis and Optimization (Canberra 1988). Proceedings of the Centre for Mathematical Analysis, vol. 20, pp. 59–65, Australian National University, Canberra, Australia (1988)

  10. Fitzpatrick S., Phelps R.R.: Bounded approximants to monotone operators on Banach spaces. Annales de l’Institut Henri PoincaréAnalyse Non Linéaire 9, 573–595 (1992)

    MathSciNet  MATH  Google Scholar 

  11. Gossez J.-P.: Opérateurs monotones non linéaires dans les espaces de Banach non réflexifs. J. Math. Anal. Appl. 34, 371–395 (1971)

    Article  MathSciNet  MATH  Google Scholar 

  12. Marques Alves M., Svaiter B.F.: On Gossez type (D) maximal monotone operators. J. Convex Anal. 17, 1077–1088 (2010)

    MathSciNet  MATH  Google Scholar 

  13. Megginson R.E.: An Introduction to Banach Space Theory. Springer, Berlin (1998)

    Book  MATH  Google Scholar 

  14. Phelps R.R.: Convex Functions, Monotone Operators and Differentiability, 2nd edn. Springer, Berlin (1993)

    MATH  Google Scholar 

  15. Phelps, R.R.: Lectures on maximal monotone operators, Extracta Mathematicae, vol. 12, pp. 193–230. http://arXiv.org/abs/math/9302209v1 (1997)

  16. Rockafellar R.T., Wets R.J-B: Variational Analysis, 3rd edn. Springer, Berlin (2009)

    MATH  Google Scholar 

  17. Simons S.: The range of a monotone operator. J. Math. Anal. Appl. 199, 176–201 (1996)

    Article  MathSciNet  MATH  Google Scholar 

  18. Simons S.: Minimax and Monotonicity. Springer, Berlin (1998)

    Google Scholar 

  19. Simons S.: Five kinds of maximal monotonicity. Set-Valued Var. Anal. 9, 391–409 (2001)

    Article  MathSciNet  MATH  Google Scholar 

  20. Simons S.: From Hahn-Banach to Monotonicity. Springer, Berlin (2008)

    MATH  Google Scholar 

  21. Simons S.: Banach SSD Spaces and classes of monotone sets. J. Convex Anal. 18, 227–258 (2011)

    MathSciNet  MATH  Google Scholar 

  22. Zălinescu C.: Convex Analysis in General Vector Spaces. World Scientific Publishing, New Jersey (2002)

    Book  MATH  Google Scholar 

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Correspondence to Liangjin Yao.

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Bauschke, H.H., Borwein, J.M., Wang, X. et al. Every maximally monotone operator of Fitzpatrick–Phelps type is actually of dense type. Optim Lett 6, 1875–1881 (2012). https://doi.org/10.1007/s11590-011-0383-2

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  • DOI: https://doi.org/10.1007/s11590-011-0383-2

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