Official Mathlib source

Nat.exists_prime_lt_and_le_two_mul

This declaration comes from Mathlib. Follow the official immutable link below to inspect the exact upstream source; ProofAtlas does not mirror or claim authorship of it.

Exact upstream reference

Package: mathlib
Repository: https://github.com/leanprover-community/mathlib4
Commit: 5e932f97dd25535344f80f9dd8da3aab83df0fe6
Source path: Mathlib/NumberTheory/Bertrand.lean:221
SHA-256: sha256:ca1588962a2c598e0f089bda6ab9fa108e89c3ee479c76bab4914f754508eb26
Verified bytes: 11,834

Open source in Mathlib

Why there is no source download here

ProofAtlas links to the official immutable Mathlib source. It does not mirror the Lean file, relicense upstream work, publish a ProofAtlas source archive, or claim a first-party source footprint.