Are the serves of the world’s best tennis pros consistent with the theoretical predictions of Nash equilibrium in mixed strategies? We analyze their serve direction choices (to the receiver’s left, right or body) with data from an online database called the Match Charting Project. Using a...

This paper analyzes the complexity of the "contraction fixed point problem": compute an epsilon-approximation to the fixed point "V"*Gamma("V"*) of a contraction mapping Gamma that maps a Banach space "B-sub-d" of continuous functions of "d" variables into itself. We focus on "quasi linear...