case trans.trans e₁ _ hi _ e₂ e₂' => exact hi $ (e₁.deterministic e₂) ▸ e₂'
α : Type
inst✝ : Readable α
s s₁ : State α
out : Reaction.Output
hd✝ : Change
s₁✝ s₂✝¹ : State α
tl✝ : Reaction.Output
s₃✝ : State α
e₁ : s₁✝ -[hd✝]→ s₂✝¹
a✝ : s₂✝¹ -[tl✝]→ s₃✝
hi : ∀ {s₂ : State α}, s₂✝¹ -[tl✝]→ s₂ → s₃✝ = s₂
s₂ s₂✝ : State α
e₂ : s₁✝ -[hd✝]→ s₂✝
e₂' : s₂✝ -[tl✝]→ s₂
⊢ s₃✝ = s₂
no goals