Scholarlink

<p>We analyze relationships between evolutionary stability and the tenable strategy blocks of Myerson and Weibull (Econometrica 83(3): 943–976). In finite two-player games, we prove that strategies robust against equilibrium entrants (Swinkels, J. Econ. Theory 57(2):306–332) are fully settled in the sense of Myerson and Weibull. Based on this, we propose new evolutionary stability concepts that characterize tenable strategy blocks directly. These characterizations are formulated solely in terms of primitives without relying on tenability’s meta game framework, simplifying the application of tenability and comparisons with other concepts. For instance, we prove that every coarsely tenable block contains a strategically stable set (Kohlberg and Mertens, Econometrica 54(5):1003–1037). Finally we show that in finite and symmetric two-player games, established evolutionary stability notions imply a symmetric variant of coarse tenability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evolutionary stability and tenable strategy blocks

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月27日

查看全文
  • Tyler Porter,
  • Peter Wikman

摘要

We analyze relationships between evolutionary stability and the tenable strategy blocks of Myerson and Weibull (Econometrica 83(3): 943–976). In finite two-player games, we prove that strategies robust against equilibrium entrants (Swinkels, J. Econ. Theory 57(2):306–332) are fully settled in the sense of Myerson and Weibull. Based on this, we propose new evolutionary stability concepts that characterize tenable strategy blocks directly. These characterizations are formulated solely in terms of primitives without relying on tenability’s meta game framework, simplifying the application of tenability and comparisons with other concepts. For instance, we prove that every coarsely tenable block contains a strategically stable set (Kohlberg and Mertens, Econometrica 54(5):1003–1037). Finally we show that in finite and symmetric two-player games, established evolutionary stability notions imply a symmetric variant of coarse tenability.