We give, for general Banach spaces, a characterization of the sequential lower limit of maximal monotone operators of type (D) and prove its representability. As a consequence, using a recent extension of the Moreau-Yosida regularization for type (D) operators, we extend to general Banach spaces the definitions of the variational sum of monotone operators and the variational composition of monotone operators with continuous linear mappings, and we prove that both operators are representable.

Contact details are reproduced from the original publication and may be historical.

Orestes Bueno

Instituto de Matemática y Ciencias Afines, Calle Los Biológos 245, La Molina, Lima 12, Perú

obueno@imca.edu.pe

Yboon García

Centro de Investigación, Universidad del Pacífico, Av. Salaverry 2020, Lima, Perú

garcia_yv@up.edu.pe

Maicon Marques Alves

Dep. de Matemática, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, Brazil

maicon.alves@ufsc.br
  1. H. Attouch, J.-B. Baillon, M. Théra: Variational sum of monotone operators, J. Convex Analysis 1(1) (1994) 1–29.https://doi.org/10.68381/jca01001Google Scholar
  2. R. I. Boţ, S. László: On the generalized parallel sum of two maximal monotone operators of Gossez type (D), J. Math. Anal. Appl. 391(1) (2012) 82–98.https://doi.org/10.1016/j.jmaa.2012.02.030Google Scholar
  3. H. Brezis, M. G. Crandall, A. Pazy: Perturbations of nonlinear maximal monotone sets in Banach space, Commun. Pure Appl. Math. 23 (1970) 123–144.https://doi.org/10.1002/cpa.3160230107Google Scholar
  4. R. S. Burachik, B. F. Svaiter: Maximal monotone operators, convex functions and a special family of enlargements, Set-Valued Anal. 10(4) (2002) 297–316.https://doi.org/10.1023/A:1020639314056Google Scholar
  5. S. Fitzpatrick: Representing monotone operators by convex functions, in: Functional Analysis and Optimization, Workshop / Miniconference (Canberra, 1988), Proc. Cent. Math. Anal. Aust. Natl. Univ. 20, Australian National University, Canberra (1988) 59–65.Google Scholar
  6. Y. García: New properties of the variational sum of monotone operators, J. Convex Analysis 16(3–4) (2008) 767–778.https://doi.org/10.68381/jca16046Google Scholar
  7. Y. García, M. Lassonde: Representable monotone operators and limits of sequences of maximal monotone operators, Set-Valued Var. Anal. 20 (2012) 61–73.https://doi.org/10.1007/s11228-011-0178-8Google Scholar
  8. Y. García, M. Lassonde, J. P. Revalski: Extended sums and extended compositions of monotone operators, J. Convex Analysis 13(3–4) (2006) 721–738.https://doi.org/10.68381/jca13054Google Scholar
  9. J.-P. Gossez: Opérateurs monotones non linéaires dans les espaces de Banach non réflexifs, J. Math. Anal. Appl. 34 (1971) 371–395.https://doi.org/10.1016/0022-247X(71)90119-3Google Scholar
  10. M. Marques Alves, B. F. Svaiter: On Gossez type (D) maximal monotone operators, J. Convex Analysis 17(3) (2010) 1077–1088.https://doi.org/10.68381/jca17066Google Scholar
  11. M. Marques Alves, B. F. Svaiter: Moreau-Yosida regularization of maximal monotone operators of type (D), Set-Valued Var. Anal. 19(1) (2011) 97–106.https://doi.org/10.1007/s11228-010-0137-9Google Scholar
  12. M. Marques Alves, B. F. Svaiter: On the surjectivity properties of perturbations of maximal monotone operators in non-reflexive Banach spaces, J. Convex Analysis 18(1) (2011) 209–226.https://doi.org/10.68381/jca18012Google Scholar
  13. J. E. Martínez-Legaz, B. F. Svaiter: Monotone operators representable by l.s.c. convex functions, Set-Valued Anal. 13(1) (2005) 21–46.https://doi.org/10.1007/s11228-004-4170-4Google Scholar
  14. J. E. Martínez-Legaz, M. Théra: A convex representation of maximal monotone operators, J. Nonlinear Convex Anal. 2(2) (2001) 243–247.Google Scholar
  15. J. J. Moreau: Fonctionelles Convexes, Séminaire Jean Leray, Collège de France, Paris (1966).Google Scholar
  16. T. Pennanen, J. P. Revalski, M. Théra: Variational composition of a monotone operator and a linear mapping with applications to elliptic PDEs with singular coefficients, J. Funct. Anal. 198(1) (2003) 84–105.https://doi.org/10.1016/S0022-1236(02)00104-0Google Scholar
  17. J.-P. Penot: The relevance of convex analysis for the study of monotonicity, Nonlinear Anal. 58(7–8) (2004) 855–871.https://doi.org/10.1016/j.na.2004.05.018Google Scholar
  18. J. P. Revalski, M. Théra: Generalized sums of monotone operators, C. R. Acad. Sci., Paris, Sér. I, Math. 329(11) (1999) 979–984.https://doi.org/10.1016/S0764-4442(00)88589-4Google Scholar
  19. J. P. Revalski, M. Théra: Variational and extended sums of monotone operators, in: Ill-Posed Variational Problems and Regularization Techniques (Trier, 1998), M. Théra et al. (ed.), Lecture Notes in Econom. and Math. Systems 477, Springer, Berlin (1999) 229–246.https://doi.org/10.1007/978-3-642-45780-7_14Google Scholar
  20. R. T. Rockafellar: On the maximality of sums of nonlinear monotone operators, Trans. Amer. Math. Soc. 149 (1970) 75–88.https://doi.org/10.1090/S0002-9947-1970-0282272-5Google Scholar
  21. S. Simons: The range of a monotone operator, J. Math. Anal. Appl. 199(1) (1996) 176–201.https://doi.org/10.1006/jmaa.1996.0135Google Scholar
  22. M. D. Voisei: A maximality theorem for the sum of maximal monotone operators in non-reflexive Banach spaces, Math. Sci. Res. J. 10(2) (2006) 36–41.Google Scholar
  23. M. D. Voisei, C. Zălinescu: Strongly-representable monotone operators, J. Convex Analysis 16(3–4) (2009) 1011–1033.https://doi.org/10.68381/jca16063Google Scholar

O. Bueno, Y. García, M. Marques Alves. “Lower Limits of Type (D) Monotone Operators in General Banach Spaces.” Journal of Convex Analysis 23 (2016), No. 2, 333–345. https://doi.org/10.68381/jca23013