We study monotone equilibrium behavior in contests with observable effort (bid) where three or more participants have distinct risk attitudes and the monetary value for the prize of each is drawn independently from a distinct distribution. These differences can either cause a player to drop out,...

Two examples of strategic equilibrium are given. The first example is a two-person game with a unique dominant strategy for each player where the dominant strategy equilibrium is not extensive form perfect. It is argued that the concept of quasi-perfect equilibria may be superior to that of...

In a multi-commodity framework with absence of wealth effects, we prove the existence of equilibrium for Cournot oligopoly, and that the concept is completely non-ambiguous. We also obtain a uniquely defined endogenous inverse demand function, depending only on the competitive sector.