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ON STUDY OF f-APPROXIMATION PROBLEMS AND σ-INVOLUTORY VARIATIONAL INEQUALITY PROBLEMS

  • Received : 2021.04.06
  • Accepted : 2021.12.17
  • Published : 2022.06.08

Abstract

The purpose of the paper is to define f-projection operator to develop the f-projection method. The existence of a variational inequality problem is studied using fixed point theorem which establishes the existence of f-projection method. The concept of ρ-projective operator and σ-involutory operator are defined with suitable examples. The relation in between ρ-projective operator and σ-involutory operator are shown. The concept of σ-involutory variational inequality problem is defined and its existence theorem is also established.

Keywords

Acknowledgement

The authors thank the esteemed reviewers for the valuable suggestions to improve the quality of the results.

References

  1. C. Bardaro and R. Ceppitelli, Applications of generalized of Knaster-Kuratowski-Mazurkiezicz theorem to variational inequalities, J. Math. Anal. Appl., 137(1) (1989), 46-58. https://doi.org/10.1016/0022-247X(89)90272-2
  2. A. Behera and P.K. Das, Variational inequality problems in H-spaces, Int. J. Math. Math. Sci., article 78545 (2006), 1-18.
  3. A. Behera and G.K. Panda, Generalized variational-type inequality in Hausdorff topological vector space, Indian J. Pure Appl. Math., 28(3) (1997), 343-349.
  4. P.K. Das, An iterative method for T-η-invex function in Hilbert space and coincidence lifting index theorem for lifting function and covering maps, Advances Nonlinear Var. Ineq., 13(2) (2010), 11-36.
  5. P.K. Das, An iterative method for (AGDDVIP) in Hibert space and the homology theory to study the (GDCPn) in Riemannian n-manifolds in the presence of fixed point inclusion, European J. Pure Appl. Math., 4(4) (2011) 340-360.
  6. P.K. Das and P. Baliarsingh, Involutory difference operator and jth difference operator, PanAmerican Math. J., 30(4) (2020), 53-62.
  7. P.K. Das and A. Behera, An application of coincidence lifting index theorem in (GHV IP) and the variable step iterative method for nonsmooth (Tη; ξθ)-invex function, Advances Nonlinear Var. Ineq., 14 (2011), 73-94.
  8. P.K. Das and S.K. Mohanta, Generalized vector variational inequality problem, generalized vector complementarity problem in Hilbert spaces, Riemannian n-manifold, 𝕊n and ordered topological vector spaces: A study using fixed point theorem and homotopy function, Advances Nonlinear Var. Ineq., 12(2) (2009), 37-47.
  9. F. Giannessi, Vector variational inequalities and vector equilibria, Wiley, New York, 1980.
  10. A. Nagurney and D. Zhang, Projected dynamical systems and variational inequalities with applications, Springer Science, 1996.
  11. G.C. Nayak and P.K. Das, Generalization of Minty's lemma for multilinear maps, Advances Nonlinear Var. Ineq., 18(2) (2015), 1-8.
  12. M.V. Solodov and B.F. Svaiter, A new projection method for variational inequality problems, SIAM J. Cont. Optim 37(3) (1997), 765-776. https://doi.org/10.1137/S0363012997317475
  13. G. Stampachchia, Formes bilineaires coercivities sur les ensembles convexes, Academie des Sciences de Paris, 258 (1964), 4413-4416.
  14. Z. Zuo, Fixed point theorems for mean nonexpansive mappings in Banach spaces, Abst. Appl. Anal., (2014), Article ID: 746291, 1-6.