Competition and intellectual property (IP) protections are complements in stimulating
innovation. When IP is appropriable, a market for inventions forms and competitive …

How do innovation policies affect the direction of research? Is market-based innovation too
radical or too incremental? We construct a novel and tractable model of the direction of …

This article presents a new approach to analyze the equilibrium set of symmetric,
differentiable games by separating multiple symmetric equilibria and asymmetric equilibria …

We develop a model of political competition with endogenous turnout and endogenous
platforms. Parties trade off incentivizing their supporters to vote and discouraging the …

This paper is an attempt to develop a unified approach to symmetry-breaking in strategic
models arising in industrial organization by constructing two general classes of two-player …

Similar countries often choose very different policies and specialize in very distinct
industries. This paper proposes a novel mechanism to explain policy diversity between …

We distinguish among three types of symmetric games, which we name ordinary symmetric
games, renaming symmetric games, and name-irrelevant symmetric games, in an order of …

In this study, we consider monotone comparative statics under interval uncertainty. We
introduce interval-valued supermodular functions and interval-valued quasisupermodular …

In this paper we show that a finite symmetric game has a pure strategy equilibrium if the
payoff functions of players are integrally concave due to Favati and Tardella (1990). Since …

This paper considers symmetry in games with more than two players. It is often noted that a
two-player game is symmetric if it looks the same to both players. However, when there are …