Observed arrival · 2026-09-23
Formalized Formal Logic
A research project formalizing mathematical logic in the Lean theorem prover, with repositories, a results catalogue, publications, and talks.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Lean users and mathematical-logic researchers
- Worth noticing
- A separate GodExistence repository formalizes Gödel’s ontological argument using higher-order modal logic.
Field notes
The homepage directs readers to a main results repository and a separate catalogue with more detailed descriptions. It also links to a GodExistence project on Gödel’s ontological argument, and lists publications and theorem-proving presentations, including Japanese-language talks. The developers say discussions are primarily in Japanese but that English is also acceptable, and suggest GitHub Discussions for questions or proposals.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue