Within a nonzero, real Banach space we study the problem of characterising a maximal extension of a monotone operator in terms of minimality properties of representative functions that are bounded by the Penot and Fitzpatrick functions. We single out a property of this space of representative functions that enable a very compact treatment of maximality and pre-maximality issues.

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

Robert Wenczel

Mathematics Department, RMIT – GPO Box 2476V, Melbourne, Vict. 3001, Australia

e01928@ems.rmit.edu.au
  1. F. J. Aragon Artacho, J. M. Borwein, V. Martín-Márquez, L. Yao: Applications of convex analysis within mathematics, preprint (2013).https://doi.org/10.1007/s10107-013-0707-3Google Scholar
  2. H. H. Bauschke, X. Wang: The kernel average for two convex functions and its applications to the extension and representation of monotone operators, Trans. Amer. Math. Soc. 361 (2009) 5947–5965.https://doi.org/10.1090/S0002-9947-09-04698-4Google Scholar
  3. H. H. Bauschke, X. Wang, L. Yao: Autoconjugate representatives for linear monotone operators, Math. Program. 123(B) (2010) 5–24.https://doi.org/10.1007/s10107-009-0319-0Google Scholar
  4. J. M. Borwein: Maximal monotonicity via convex analysis, J. Convex Analysis 13(3–4) (2006) 561–586.https://doi.org/10.68381/jca13045Google Scholar
  5. J. M. Borwein: Maximality of sums of two maximal monotone operators in general Banach space, Proc. Amer. Math. Soc 135 (2007) 3917–3924.https://doi.org/10.1090/S0002-9939-07-08960-5Google Scholar
  6. J. M. Borwein, L. Yao: Recent progress on monotone operator theory, arXiv:1210.3401v3 [math.FA] (2013).Google Scholar
  7. R. 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
  8. R. S. Burachik, B. F. Svaiter: Maximal monotonicity, conjugation, and the duality product, Proc. Amer. Math. Soc. 132(8) (2003) 2379–2383.https://doi.org/10.1090/S0002-9939-03-07053-9Google Scholar
  9. 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
  10. M. Marques Alves, B. F. Svaiter: Maximal monotonicity, conjugation and duality product in non-reflexive spaces, J. Convex Analysis 17(2) (2010) 533–563.https://doi.org/10.68381/jca17037Google Scholar
  11. J.-E. Martínez-Legaz, B. F. Svaiter: Minimal convex functions bounded below by the duality product, Proc. Amer. Math. Soc. 136(3) (2008) 873–878.https://doi.org/10.1090/S0002-9939-07-09176-9Google Scholar
  12. J.-E. Martínez-Legaz, B. F. Svaiter: Monotone operators representable by l.s.c. convex functions, Set-Valued Anal. 13 (2005) 21–46.https://doi.org/10.1007/s11228-004-4170-4Google Scholar
  13. 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
  14. R. T. Rockafellar: On the maximality of sums of nonlinear monotone operators, Trans. Amer. Math. Soc. 159 (1970) 81–99.Google Scholar
  15. S. Simons: From Hahn-Banach to Monotonicity, Springer, Berlin (2007).Google Scholar

A. Eberhard, R. Wenczel. “On the Maximal Extensions of Monotone Operators and Criteria for Maximality.” Journal of Convex Analysis 24 (2017), No. 1, 19–40. https://doi.org/10.68381/jca24002