Abstract
The purpose of this paper is to investigate nonemptiness and boundedness of the solution set for a vector equilibrium problem with strict feasibility in reflexive Banach spaces. We introduce the concept of strict feasibility for a vector equilibrium problem, which recovers the existing concepts of strict feasibility introduced for variational inequalities. We prove that a pseudomonotone vector equilibrium problem has a nonempty bounded solution provided that it is strictly feasible in the strong sense.
Similar content being viewed by others
References
Blum E., Oettli W.: From optimization and variational inequalities to equilibrium problems. Math. Stud. 63, 1–23 (1993)
Bianchi M., Schaible S.: Generalized monotone bifunctions and equilibrium problems. J. Optim. Theory Appl. 90, 31–43 (1996)
Bianchi M., Pini R.: A note on equilibrium problems with properly quasimonotone bifunctions. J. Global Optim. 20(1), 67–76 (2001)
Bianchi M., Pini R.: Coercivity conditions for equilibrium problems. J. Optim. Theory Appl. 124(1), 79–92 (2005)
Chadli O., Schaible S., Yao J.C.: Regularized equilibrium problems with application to noncoercive hemivariational inequalities. J. Optim. Theory Appl. 121(3), 571–596 (2004)
Bianchi M., Hadjisavvas N., Schaible S.: Vector equilibrium problems with generalized monotone bifunctions. J. Optim. Theory Appl. 92(3), 527–542 (1997)
Hadjisavvas N., Schaible S.: From scalar to vector equilibrium problems in the quasimonotone case. J. Optim. Theory Appl. 96, 297–309 (1998)
Oettli W.: A remark on vector-valued equilibria and generalized monotonicity. Acta Mathematica Vietnam. 22, 213–221 (1997)
Fakhar M., Zafarani J.: Equilibrium problems in the quasimonotone case. J. Optim. Theory Appl. 126(1), 125–136 (2005)
Ansari Q.H., Konnov I.V., Yao J.C.: Characterizations of solutions for vector equilibrium problems. J. Optim. Theory Appl. 113(3), 435–447 (2002)
Giannessi F.: Theorems of alterative, quadratic progams and complementarity problems. In: Cottle, R.W., Giannessi, F., Lions, J.L. (eds) Variational Inequalities and Complementarity Problems, pp. 151–186. Wiley, New York (1980)
Chen G.Y., Huang X.X., Yang X.Q.: Vector Optimization: Set-valued and Variational Analysis. Springer, Berlin (2005)
Chen G.Y., Yang X.Q.: The vector complementary problem and its equivalence with weak minimal elements in ordered spaces. J. Math. Anal. Appl. 153, 136–158 (1990)
Chen G.Y.: Existence of solutions for a vector variational inequality: an extension of the Hartman-Stampacchia theorem. J. Optim. Theory Appl. 74, 445–456 (1992)
Yang X.Q.: Vector complementarity and minimal element problems. J. Optim. Theory Appl. 77, 483–495 (1993)
Yang X.Q.: Vector variational inequality and its duality. Nonlinear Anal. 95, 729–734 (1993)
Konnov I.V., Yao J.C.: On the generalized vector variational inequality problem. J. Math. Anal. Appl. 206, 42–58 (1997)
Lalitha C.S., Mehta M.: Vector variational inequalities with cone-pseudomonotone bifunctions. Optimization 54(3), 327–338 (2005)
Fang Y.P., Huang N.J.: Feasibility and solvability for vector complementarity problems. J. Optim. Theory Appl. 129(3), 373–390 (2006)
Harker P.T., Pang J.S.: Finite-dimensional variational and nonlinear complementarity problems: A survey of theory, algorithms and applications. Math. Prog. 48, 161–220 (1990)
Daniilidis A., Hadjisavvas N.: Coercivity conditions and variational inequalities. Math. Prog. Ser. A 86(2), 433–438 (1999)
Facchinei F., Pang J.S.: Finite-Dimensional Variational Inequalities and Complementarity Problems. Springer, New York (2003)
Crouzeix J.P.: Pseudomonotone variational inequality problems: existence of solutions. Math. Prog. Ser. A 78(3), 305–314 (1997)
He Y.R., Ng K.F.: Strict feasibility of generalized complementarity problems. J. Austral. Math. Soc. Ser. A 81(1), 15–20 (2006)
He Y.R., Mao X.Z., Zhou M.: Strict feasibility of variational inequalities in reflexive Banach spaces. Acta Math. Sin. English Ser. 23, 563–570 (2007)
Hu R., Fang Y.P: Feasibility-solvability theorem for a generalized system. J. Optim. Theory Appl. 142(3), 493–499 (2009)
Auslender A., Teboulle M.: Asymptotic Cones and Functions in Optimization and Variational Inequalities. Springer, New York (2003)
Fang Y.P, Huang N.J.: Vector equilibrium problems, minimal element problems and least element problems. Positivity 11(2), 251–268 (2007)
Adly S., Théra M., Ernst E.: Stability of the solution set of non-coercive variational inequalities. Commun. Contemp. Math. 4(1), 145–160 (2002)
Adly S., Théra M., Ernst E.: On the closedness of the algebraic difference of closed convex sets. J. Math. Pures Appl. 82(9), 1219–1249 (2003)
Adly S., Théra M., Ernst E.: Well-positioned closed convex sets and well-positioned closed convexfunctions. J. Global Optim. 29, 337–351 (2004)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hu, R., Fang, Y.P. Strict feasibility and solvability for vector equilibrium problems in reflexive Banach spaces. Optim Lett 5, 505–514 (2011). https://doi.org/10.1007/s11590-010-0215-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11590-010-0215-9