14 lines
356 B
Text
14 lines
356 B
Text
/-
|
||
Copyright (c) 2024 Lean FRO. All rights reserved.
|
||
Released under Apache 2.0 license as described in the file LICENSE.
|
||
Authors: Kim Morrison
|
||
-/
|
||
module
|
||
|
||
prelude
|
||
import Init.Core
|
||
|
||
deriving instance DecidableEq for PLift
|
||
|
||
instance [Subsingleton α] : Subsingleton (PLift α) where
|
||
allEq := fun ⟨a⟩ ⟨b⟩ => congrArg PLift.up (Subsingleton.elim a b)
|