have : m ≃ 0 := Rel.trans (Rel.symm Addition.zero_add) ‹0 + m ≃ 0›
ℕ : Type
inst✝² : Core ℕ
inst✝¹ : Induction ℕ
inst✝ : Addition ℕ
n m : ℕ
x✝ : 0 + m ≃ 0
⊢ 0 ≃ 0 ∧ m ≃ 0
ℕ : Type
inst✝² : Core ℕ
inst✝¹ : Induction ℕ
inst✝ : Addition ℕ
n m : ℕ
x✝ : 0 + m ≃ 0
this : m ≃ 0
⊢ 0 ≃ 0 ∧ m ≃ 0