Official Mathlib source

Fintype.exists_ne_map_eq_of_card_lt

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/Data/Fintype/Pigeonhole.lean:46
SHA-256: sha256:fa4604d2b1ae480f910e6000ca8814a632299082b48a14f598314303b68cc582
Verified bytes: 3,056

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.