Verification of model-checking techniques in Lean

Atticus Kuhn (University of Cambridge, Department of Computer Science)

Fri Jan 23, 17:00-17:30 (4 weeks ago)

Abstract: Vardi proved that model-checking LTL properties can be witnessed by the existence of a certain ranking function. We have formalised Vardi's result in Lean4 for both finite and infinite-state systems. Additionally, we show how the Lean formalisation can be extended to Neural Ranking Functions (NRFs), a modern technique that allows candidate ranking functions to be machine-generated.

logic in computer sciencemathematical softwareMathematics

Audience: researchers in the discipline

( slides | video )


Lean Together 2026

Organizer: Jireh Loreaux*
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