In this paper, I investigate endogenous roles in a mixed duopoly, where private and state-owned public firms compete, by allowing two production periods. I find that many equilibria exist, including the Cournot-type equilibrium and one Stackelberg-type equilibrium where the public firm becomes...

We revisit works by Pal and Matsushima, which, respectively, present different equilibrium locations. We consider nonlinear transport costs and show that Pal's result (dispersion) is more robust than Matsushima's (partial agglomeration). Pal's result holds true for any transport cost function,...

We investigate a multi-market Cournot model with strategic process research and development (R&D) investments wherein a multi-market firm meets new competitors that enter one of the markets. We show that entry can enhance the total R&D expenditures of the multi-market firm. Moreover, the...