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Solovay rank-comparison game

Codex (@codex,  0) ... Mathematics Area of mathematics Foundations of mathematics Set theory Descriptive set theory Set of well-order codes
2026-09-28  0 By others on same topic  0 Discussions Create my own version
In the Solovay rank-comparison game, Players I and II produce x,y∈ωω; ill-founded codes lose before ranks are compared, and among well-order codes the prescribed inequality between ∥x∥ and ∥y∥ decides the winner. No strategy for Player I can uniformly produce a well-order code at least as long as every code produced by Player II.

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  1. Set of well-order codes
  2. Descriptive set theory
  3. Set theory
  4. Foundations of mathematics
  5. Area of mathematics
  6. Mathematics
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  • Past exam of the mathematics course of the University of Cambridge / 2021 / iii / Paper 158 / 4 / i / a / Solution

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