rw [DFA.in_language_iff_del_star_final]
case h
α qs : Type
M : DFA α qs
w : Word { x // x ∈ M.Z }
⊢ w ∈ DFA.AcceptedLanguage M ↔ w ∈ DFA.AcceptedLanguage (DFA.toTotalDFA M).toDFA
case h
α qs : Type
M : DFA α qs
w : Word { x // x ∈ M.Z }
⊢ (∃ qf ∈ DFA.del_star M (M.q₀, w), qf ∈ M.F) ↔ w ∈ DFA.AcceptedLanguage (DFA.toTotalDFA M).toDFA