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

State before:
x : Pos
⊢ ¬x + 1 < x
Tactic:
by_toNat
State after:
x : Pos
⊢ ¬x.toNat > x.toNat + 1

State before:
x : Pos
⊢ ¬x.toNat > x.toNat + 1
Tactic:
apply Nat.not_lt_of_ge
State after:
case a
x : Pos
⊢ x.toNat + 1 ≥ x.toNat

State before:
case a
x : Pos
⊢ x.toNat + 1 ≥ x.toNat
Tactic:
exact Nat.le_add_right ..
State after:
no goals