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Nonmonotone equilibrium problems: coercivity conditions and weak regularization

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Abstract

We consider a general equilibrium problem in a finite-dimensional space setting and propose a new coercivity condition for existence of solutions. We also show that it enables us to create a broad family of regularization methods with preserving well-definiteness and convergence of the iteration sequence without additional monotonicity assumptions. Some examples of applications are also given.

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References

  1. Baiocchi C., Capelo A.: Variational and quasivariational inequalities: applications to free boundary problems. Wiley, New York (1984)

    Google Scholar 

  2. Blum E., Oettli W.: From optimization and variational inequalities to equilibrium problems. The Math. Stud. 63, 123–145 (1994)

    Google Scholar 

  3. Patriksson M.: Nonlinear programming and variational inequality problems: a unified approach. Kluwer, Dordrecht (1999)

    Google Scholar 

  4. Facchinei F., Pang J.-S.: Finite-dimensional variational inequalities and complementarity problems. Springer, Berlin (2003)

    Google Scholar 

  5. Giannessi, F., Maugeri, A., Pardalos, P.M. (eds): Equilibrium problems: nonsmooth optimization and variational inequality models, “nonconvex optimization and applications”. Springer, New York (2002)

    Google Scholar 

  6. Konnov I.V.: Generalized monotone equilibrium problems and variational inequalities. In: Hadjisavvas, N., Komlósi, S., Schaible, S. (eds) Handbook of generalized convexity and generalized monotonicity, “nonconvex optimization and applications”, pp. 559–618. Springer, New York (2005)

    Google Scholar 

  7. Fan K.: A minimax inequality and applications. In: Shisha, O. (eds) Inequalities iii, pp. 103–113. Academic Press, New York (1972)

    Google Scholar 

  8. Isac G.: A generalization of Karamardian’s condition in complementarity theory. Nonlin. Anal. Forum 4, 49–63 (1999)

    Google Scholar 

  9. Bianchi M., Hadjisavvas N., Schaible S.: Minimal coercivity conditions and exceptional families of elements in quasimonotone variational inequalities. J. Optim. Theory Appl. 122, 1–17 (2004)

    Article  Google Scholar 

  10. Bianchi M., Pini R.: Coercivity conditions for equilibrium problems. J. Optim. Theory Appl. 124, 79–92 (2005)

    Article  Google Scholar 

  11. Isac G.: Leray-Schauder type alternatives, complemantarity problems and variational inequalities. Springer, Berlin (2006)

    Google Scholar 

  12. Tikhonov A.N., Arsenin V.Ya.: Solutions of Ill-posed problems. Wiley, New York (1977)

    Google Scholar 

  13. Gwinner J.: On the regularization of monotone variational inequalities. Oper. Res. Verfahren. 28, 374–386 (1978)

    Google Scholar 

  14. Bakushinskii A.B., Goncharskii A.V.: Iterative methods for Ill-posed problems. Nauka, Moscow (1989) [in Russian]

    Google Scholar 

  15. Konnov I.V., Pinyagina O.V.: D-gap functions and descent methods for a class of monotone equilibrium problems. Lobachevskii J. Math. 13, 57–65 (2003)

    Google Scholar 

  16. Konnov I.V.: Partial regularization methods for equilibrium problems. J. Nonlin. Convex Anal. 6, 497–503 (2005)

    Google Scholar 

  17. Konnov I.V., Ali M.S.S.: Descent methods for nonotone equilibrium problems in Banach spaces. J. Comput. Appl. Math. 188, 165–179 (2006)

    Article  Google Scholar 

  18. Liskovets O.A.: Regularized variational inequalities with pseudo-monotone operators on approximately given sets. Differ. Equat. 25, 1970–1977 (1989) [in Russian]

    Google Scholar 

  19. Isac G.: Tikhonov regularization and the complementarity problem in Hilbert spaces. J. Math. Anal. Appl. 174, 53–66 (1993)

    Article  Google Scholar 

  20. Kalashnikov V.V., Khan A.A. et al.: A regularization approach for variational inequalities with pseudo-monotone operators. In: Inderfurth, K. (eds) Operations research proceedings 1999, pp. 19–22. Springer, Berlin (2000)

    Google Scholar 

  21. Gwinner J.: A note on pseudomonotone functions, regularization, and relaxed coerciveness. Nonlin. Anal.: Theory, Meth. Appl. 30, 4217–4227 (1997)

    Article  Google Scholar 

  22. Facchinei F., Kanzow C.: Beyond monotonicity in regularization methods for nonlinear complementarity problems. SIAM J. Contr. Optim. 37, 1150–1161 (1999)

    Article  Google Scholar 

  23. Alber Y., Butnariu D., Ryazantseva I.: Regularization and resolution of monotone variational inequalities with operators given by hypomonotone approximations. J. Nonlin. Convex Anal. 6, 23–53 (2005)

    Google Scholar 

  24. Konnov I.V.: On the convergence of a regularization method for variational inequalities. Comput. Maths. Math. Phys. 46, 541–547 (2006)

    Article  Google Scholar 

  25. Konnov I.V., Ali M.S.S., Mazurkevich E.O.: Regularization of nonmonotone variational inequalities. Appl. Math. Optim. 53, 311–330 (2006)

    Article  Google Scholar 

  26. Allevi E., Gnudi A., Konnov I.V.: Partitionable variational inequalities with multi-valued mappings. In: Konnov, I.V., Luc, D.T., Rubinov, A.M. (eds) Generalized convexity and related topics, pp. 91–100. Springer, Berlin (2007)

    Google Scholar 

  27. Konnov I.V.: Regularization method for nonmonotone equilibrium problems. J. Nonlin. Convex Anal. 10, 93–101 (2009)

    Google Scholar 

  28. Ha C.D.: A generalization of the proximal point algorithm. SIAM J. Contr. Optim. 28, 503–512 (1990)

    Article  Google Scholar 

  29. Konnov I.V.: Convex optimization problems with arbitrary right-hand side perturbations. Optimization 54, 131–147 (2005)

    Article  Google Scholar 

  30. Dyabilkin D.A., Konnov I.V.: Partial regularization method for nonmonotone variational inequalities. Comput. Maths. Math. Phys. 48, 337–345 (2008)

    Article  Google Scholar 

  31. Sukharev A.G., Timokhov A.V., Fedorov V.V.: A course in optimization methods. Nauka, Moscow (1986) [in Russian]

    Google Scholar 

  32. Li J., Whitaker J.: Exceptional family of elements and solvability of variational inequalities for mappings defined only on closed convex sets in Banach spaces. J. Math. Anal. Appl. 310, 254–261 (2005)

    Article  Google Scholar 

  33. Konnov I.V.: Dual approach for a class of implicit convex optimization problems. Math. Meth. Oper. Res. 60, 87–99 (2004)

    Article  Google Scholar 

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Correspondence to I. V. Konnov.

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This work was supported by the joint RFBR–NNSF grant, project No. 07-01-92101.

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Konnov, I.V., Dyabilkin, D.A. Nonmonotone equilibrium problems: coercivity conditions and weak regularization. J Glob Optim 49, 575–587 (2011). https://doi.org/10.1007/s10898-010-9551-7

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