We provide an approach to maximal monotone bifunctions based on the theory of representative functions. Thus we extend to nonreflexive Banach spaces recent results due to A. N. Iusem ["On the maximal monotonicity of diagonal subdifferential operators", J. Convex Analysis 18 (2011) 489–503] and, respectively, to N. Hadjisavvas and H. Khatibzadeh ["Maximal monotonicity of bifunctions", Optimization 59 (2010) 147–160], where sufficient conditions guaranteeing the maximal monotonicity of bifunctions were introduced. New results involving the sum of two monotone bifunctions are also presented.

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  1. M. Aït Mansour, Z. Chbani, H. Riahi: Recession bifunction and solvability of noncoercive equilibrium problems, Commun. Appl. Anal. 7(2–3) (2003) 369–377.Google Scholar
  2. E. Blum, W. Oettli: From optimization and variational inequalities to equilibrium problems, Math. Stud. 63(1–4) (1994) 123–145.Google Scholar
  3. R. I. Boţ, E. R. Csetnek: An application of the bivariate inf-convolution formula to enlargements of monotone operators, Set-Valued Anal. 16(7–8) (2008) 983–997.https://doi.org/10.1007/s11228-008-0093-9Google Scholar
  4. R. I. Boţ, S.-M. Grad, G. Wanka: Maximal monotonicity for the precomposition with a linear operator, SIAM J. Optim. 17(4) (2006) 1239–1252.https://doi.org/10.1137/050641491Google Scholar
  5. R. I. Boţ, S.-M. Grad, G. Wanka: Weaker constraint qualifications in maximal monotonicity, Numer. Funct. Anal. Optimization 28(1–2) (2007) 27–41.https://doi.org/10.1080/01630560701190224Google Scholar
  6. 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
  7. R. S. Burachik, B. F. Svaiter: Maximal monotonicity, conjugation and the duality product, Proc. Amer. Math. Soc. 131(8) (2003) 2379–2383.https://doi.org/10.1090/S0002-9939-03-07053-9Google Scholar
  8. A. N. Iusem: On the maximal monotonicity of diagonal subdifferential operators, J. Convex Analysis 18(2) (2011) 489–503.https://doi.org/10.68381/jca18031Google Scholar
  9. M. Marques Alves, B. F. Svaiter: Maximal monotonicity, conjugation and the duality product in non-reflexive Banach spaces, J. Convex Analysis 17(2) (2010) 553–563.https://doi.org/10.68381/jca17037Google Scholar
  10. N. Hadjisavvas, H. Khatibzadeh: Maximal monotonicity of bifunctions, Optimization 59(2) (2010) 147–160.https://doi.org/10.1080/02331930801951116Google Scholar
  11. J.-P. Penot, C. Zălinescu: Some problems about the representation of monotone operators by convex functions, ANZIAM J. 47(1) (2005) 1–20.https://doi.org/10.1017/S1446181100009731Google Scholar
  12. S. Simons: From Hahn-Banach to Monotonicity, 2nd Ed., Lecture Notes in Mathematics 1693, Springer, Berlin (2008).Google Scholar
  13. C. Zălinescu: Convex Analysis in General Vector Spaces, World Scientific, Singapore (2002).https://doi.org/10.1142/5021Google Scholar

R. I. Boţ, S.-M. Grad. “Approaching the Maximal Monotonicity of Bifunctions via Representative Functions.” Journal of Convex Analysis 19 (2012), No. 3, 713–724. https://doi.org/10.68381/jca19038