At the equilibrium, no user can improve its utility by changing its own strategy only.
where p ̂ − k, n = { p ̂ 1, n F, …, p ̂ k − 1, n F, p ̂ k + 1, n F, …, p ̂ K, n F } is the optimal transmit power vector of the K−1 co-channel femto users using subchannel n under Nash Equilibrium except for the co-channel femto user in femtocell k, and Nash Equilibrium is defined as the fixed points where no player can improve its utility by changing its strategy unilaterally [20].
In the process of precoding and power allocation, every player is unilaterally optimal and no player can increase its utility alone by changing its own strategy (i.e., a SU selfishly chooses a strategy to increase its own utility, it may increase the interference of other SUs [2]).
(Coalitional graph Nash equilibrium (CGNE)) The coalitional graph game (mathcal {G} = left (mathcal {N}, mathcal {X}, mathcal {U} right)) has the Nash equilibrium if no player can increase its network utility by changing its resource-sharing strategy, i.e., (x_{i}^ = arg max limits _{x_{i}in mathcal {S}_{i}}U_{i}(x_{i},x_{-i}),forall i in mathcal {N}).
More recently, it signalled its growing integration by changing its name to the European Union.
The thermal efficiency can be improved either by changing the geometric parameters or by changing its working fluid.
In equilibrium, no firm can affect its value by changing its dividend policy.
MoviePass sometimes irked customers by changing its service without explanation.
