Positional Determinacy of Parity Games

Christoph Dittmann 🌐

November 2, 2015

This is a development version of this entry. It might change over time and is not stable. Please refer to release versions for citations.


We present a formalization of parity games (a two-player game on directed graphs) and a proof of their positional determinacy in Isabelle/HOL. This proof works for both finite and infinite games.


BSD License


Session Parity_Game