If A is skew symmetric then for any strategy X for player I, E(X, X) = 0.

If A is skew symmetric then for any strategy X for player I, E(X, X) = 0.

If A is skew symmetric then for any strategy X for player I, E(X, X) = 0.
If A is skew symmetric then for any strategy X for player I, E(X, X) = 0.