Theorem: Smt.Arith.lt_eq_sub_lt_zero (Smt/Reconstruct/Arith/ArithPolyNorm.lean)

State before:
α : Type u_1
inst✝ : LinearOrderedRing α
a b : α
⊢ (a < b) = (a - b < 0)
Tactic:
simp only [sub_neg]
State after:
no goals