Existence of solutions to set equilibrium problems under domination structure and applications

Authors

  • Lam Quoc Anh
  • Xuan Hai Nguyen

Keywords

Bài toán cân bằng, bất đẳng thức biến phân, bài toán mạng giao thông, sự tồn tại nghiệm

Abstract

In this paper, we investigate set-valued equilibrium problems under domination structures in topological spaces without assuming any linear structure. The existence of solutions is established via a direct approach, without relying on the convexity of the constraint sets and objective mappings, or on fixed point principles and Ekeland’s variational principles. The obtained results are further applied to variational inequalities and traffic network equilibrium problems. Moreover, numerical examples are provided to illustrate the applicability of the obtained results.

Downloads

Download data is not yet available.

References

Al-Homidal, S., & Ansari, Q. H. (2020). Vectorial form of Ekeland variational principle with applications to vector equilibrium problem. Optimization, 69(3), 415-436.
https://doi.org/10.1080/02331934.2019.1589469

Bianchi, M., Kassay, G., & Pini, R. (2007). Ekeland’s principle for vector equilibrium problems. Nonlinear Analysis, 66(7), 1454-1464.
https://doi.org/10.1016/j.na.2006.02.003

Balaj, M. (2013). Three types of variational relation problems. Taiwanese Journal of Mathematics, 17(1), 47-61.
https://doi.org/10.11650/tjm.17.2013.2883

Blum, B., & Oettli, W. (1994). From optimization and variational inequalities to equilibrium problems. Mathematics Student-India, 63, 123-145.

Cao, J. D., Li, R. X., Huang, W., Guo, J. H., & Wei. Y. (2018). Traffic network equilibrium problems with demands uncertainty and capacity constraints of arcs by scalarization approaches. Science China Technological Sciences, 61(6), 1642–1653.
https://doi.org/10.1007/s11431-017-9172-4

Fu, J. Y. (2005). Vector equilibrium problems. Existence theorems and convexity of solution set. Journal of Global Optimization, 31(1), 109-119.
https://doi.org/10.1007/s10898-004-4274-2

Gutierrez, C., Novo, V., & Rodenas-Pedregosa, J. L. (2018). A note on existence of weak efficient solutions for vector equilibrium problems. Optimization Letters, 12(3), 615-623.
https://doi.org/10.1007/s11590-018-1242-1

Gutierrez, C., Kassay, G., Novo, V., & Rodenas-Pedregosa, J. L. (2017). Ekeland variational principles in vector equilibrium problems. SIAM Journal on Optimization, 27(4), 2405-2425.
https://doi.org/10.1137/17M111883X

Hai, N. X., & Khanh, P. Q. (2007a). Existence of solutions to general quasiequilibrium problems and applications. Journal of Optimization Theory and Applications, 133(3), 317-327.
https://doi.org/10.1007/s10957-007-9170-8

Hai, N. X., & Khanh, P. Q. (2007b). The solution existence of general variational inclusion problems. Journal of Mathematical Analysis and Applications, 328(2), 268-1277.
https://doi.org/10.1016/j.jmaa.2006.06.058

Khanh, P. Q., & Luu, L. M. (2004). On the existence of solutions to vector quasivariational inequalities and quasicomplementarity problems with applications break to traffic network equilibria. Journal of Optimization Theory and Applications, 123(3), 533-548.
https://doi.org/10.1007/s10957-004-5722-3

Maugeri, A. (1995). Variational and Quasivariational Inequalities in Network Flow Models: Recent Developments in Theory and Algorithms. In F. Giannessi & A. Maugeri (Eds.), Variational Inequalities and Network Equilibrium Problems (pp. 195-211).
https://doi.org/10.1007/978-1-4899-1358-6_15

Zhou, Z., Liang, K., & Ansari, Q. H. (2025). Optimality conditions for Benson proper efficiency of set-valued equilibrium problems. Mathematical Methods of Operations Research, 101(1), 111-134.
https://doi.org/10.1007/s00186-025-00887-2

Published

2026-06-17

Issue

Section

Natural Sciences