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“Why not just use Lean?”

Show HN: Sostactic – polynomial inequalities using sums-of-squares in Lean

Lean proved this program correct; then I found a bug

Zero-Cost POSIX Compliance: Encoding the Socket State Machine in Lean's Types

Running Lean at Scale

Some Junk Theorems in Lean

We resolve a $1000 Erdős problem, with a Lean proof vibe coded using ChatGPT

Project to formalise a proof of Fermat’s Last Theorem in the Lean theorem prover

How to (actually) prove it – New Frontiers of Mathematics and Computing in Lean