lean4-htt/src/Init/Hints.lean
Leonardo de Moura 4ec85a39a5 fix: Not should not be reducible, special support for Ne
Unification hint for `Not`
2021-02-15 17:36:11 -08:00

12 lines
371 B
Text

/-
Copyright (c) 2021 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Leonardo de Moura
-/
prelude
import Init.NotationExtra
/- Hint for making sure `Not p` is definitionally equal to `p → False` even when
`TransparencyMode.reducible` -/
unif_hint (p : Prop) where
|- Not p =?= p → False