Applications of order-theoretic fixed point theorems to discontinuous quasi-equilibrium problems

Congjun Zhang1, Yuehu Wang2
1School of Applied Mathematics, Nanjing University of Finance and Economics, Nanjing, P.R. China
2School of Mathematical Sciences, Anhui University, Hefei, P.R. China

Tóm tắt

In this paper, we apply order-theoretic fixed point theorems and isotone selection theorems to study quasi-equilibrium problems. Some existence theorems of solutions to quasi-equilibrium problems are obtained on Hilbert lattices, chain-complete lattices and chain-complete posets, respectively. In contrast to many papers on equilibrium problems, our approach is order-theoretic and all results obtained in this paper do not involve any topological continuity with respect to the considered mappings.

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Tài liệu tham khảo

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