ext τ
ν : Type u_1
s : LawfulState ν
n : ℕ
⊢ interp (withTemps s) = fun τ => interp s (PropAssignment.map Sum.inl τ)
case h.a
ν : Type u_1
s : LawfulState ν
n : ℕ
τ : PropAssignment (ν ⊕ Fin n)
⊢ interp (withTemps s) τ ↔ interp s (PropAssignment.map Sum.inl τ)