Motivated by the Ekeland variational principle, we obtained a Metatheorem in 1985-87 stating that some wellknown existence of maximal elements can be equivalently formulated to existence theorems on fixed elements, stationary points, common fixed points, common stationary points,...
Open access
Research Article10.9734/jamcs/2023/v38i51761
Some ordered fixed point theorems on metric spaces are equivalent to completeness and existences of maximal (or minimal) elements, common fixed points, common stationary points, etc. Some known or new theorems related to the Caristi fixed point theorem can be equivalently formula...
Open access
Research Article10.9734/jamcs/2023/v38i11741
In this paper, we examine noncooperative games with both of the collection of strategies and the ranges of the utilities for the players are lattices, which are said to be nonmonetized. Then we extend the concept of Nash equilibria of noncooperative games to generalized Nash equi...
Open access
Research Article10.9734/BJEMT/2014/4618