| /- | |
| 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 |