Theorem Nat.AtLeastTwo.ne_one

Modification history

2025-08-22 06:26
Mathlib/Data/Nat/Cast/Defs.lean
refactor: syntactically generalise the `Nontrivial (Fin n)` instance (#28638) …
Modified Nat.AtLeastTwo.ne_oneView on Github →
2024-02-25 19:55
Mathlib/Data/Nat/Cast/Defs.lean
chore: add instance from `Nat.AtLeastTwo n` to `NeZero n` (#10964) …
Modified Nat.AtLeastTwo.ne_oneView on Github →
2023-11-03 09:34
Mathlib/Data/Nat/Cast/Defs.lean
feat(Data/Real/NNReal): add lemmas about `Real.toNNReal` (#8136) …
Added Nat.AtLeastTwo.ne_oneView on Github →