Theorem: Pos.lt_irrefl (Extra/Pos/Lemmas.lean)

State before:
x : Pos
⊢ ¬x < x
Tactic:
by_toNat
State after:
x : Pos
⊢ ¬x.toNat > x.toNat

State before:
x : Pos
⊢ ¬x.toNat > x.toNat
Tactic:
exact Nat.lt_irrefl _
State after:
no goals