have ⟨m₁⟩ := Object.iff_obj?_some.mpr h₁
α : Type
inst✝ : Hierarchical α
rtr₁ rtr₂ : α
i : Component.idType Component.rtr
n₁ n₂ : Component.type α Component.rtr
e : rtr₁ ≈ rtr₂
h₁ : rtr₁[Component.rtr][i] = some n₁
h₂ : rtr₂[Component.rtr][i] = some n₂
⊢ n₁ ≈ n₂
α : Type
inst✝ : Hierarchical α
rtr₁ rtr₂ : α
i : Component.idType Component.rtr
n₂ : Component.type α Component.rtr
e : rtr₁ ≈ rtr₂
h₂ : rtr₂[Component.rtr][i] = some n₂
m₁ : Member Component.rtr i rtr₁
h₁ : rtr₁[Component.rtr][i] = some (Member.object m₁)
⊢ Member.object m₁ ≈ n₂