Theorem: match_concat_EpsilonNFA_toAbstract
Proof state before:
case left
α : Type
inst✝ : DecidableEq α
σ_0 σ_1 : Type
M_0 : EpsilonNFA α σ_0
M_1 : EpsilonNFA α σ_1
⊢ (fun start_state symbol stop_state =>
      ∃ stop_state_list,
        { start_state := start_state, symbol := symbol, stop_state_list := stop_state_list } ∈
            List.map
                (fun arrow =>
                  { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                    stop_state_list := List.map Sum.inr arrow.stop_state_list })
                (List.map
                  (fun arrow =>
                    { start_state := Sum.inl arrow.start_state, symbol := arrow.symbol,
                      stop_state_list := List.map Sum.inl arrow.stop_state_list })
                  M_0.symbol_arrow_list) ++
              List.map
                (fun arrow =>
                  { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                    stop_state_list := List.map Sum.inr arrow.stop_state_list })
                (List.map
                  (fun arrow =>
                    { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                      stop_state_list := List.map Sum.inr arrow.stop_state_list })
                  M_1.symbol_arrow_list) ∧
          stop_state ∈ stop_state_list) =
    fun p c q =>
    match (p, q) with
    | (Sum.inr (Sum.inl p'), Sum.inr (Sum.inl q')) =>
      ∃ stop_state_list,
        { start_state := p', symbol := c, stop_state_list := stop_state_list } ∈ M_0.symbol_arrow_list ∧
          q' ∈ stop_state_list
    | (Sum.inr (Sum.inr p'), Sum.inr (Sum.inr q')) =>
      ∃ stop_state_list,
        { start_state := p', symbol := c, stop_state_list := stop_state_list } ∈ M_1.symbol_arrow_list ∧
          q' ∈ stop_state_list
    | x => False
Tactic:
funext p c q
Proof state after:
case left.h.h.h
α : Type
inst✝ : DecidableEq α
σ_0 σ_1 : Type
M_0 : EpsilonNFA α σ_0
M_1 : EpsilonNFA α σ_1
p : ℕ ⊕ σ_0 ⊕ σ_1
c : α
q : ℕ ⊕ σ_0 ⊕ σ_1
⊢ (∃ stop_state_list,
      { start_state := p, symbol := c, stop_state_list := stop_state_list } ∈
          List.map
              (fun arrow =>
                { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                  stop_state_list := List.map Sum.inr arrow.stop_state_list })
              (List.map
                (fun arrow =>
                  { start_state := Sum.inl arrow.start_state, symbol := arrow.symbol,
                    stop_state_list := List.map Sum.inl arrow.stop_state_list })
                M_0.symbol_arrow_list) ++
            List.map
              (fun arrow =>
                { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                  stop_state_list := List.map Sum.inr arrow.stop_state_list })
              (List.map
                (fun arrow =>
                  { start_state := Sum.inr arrow.start_state, symbol := arrow.symbol,
                    stop_state_list := List.map Sum.inr arrow.stop_state_list })
                M_1.symbol_arrow_list) ∧
        q ∈ stop_state_list) =
    match (p, q) with
    | (Sum.inr (Sum.inl p'), Sum.inr (Sum.inl q')) =>
      ∃ stop_state_list,
        { start_state := p', symbol := c, stop_state_list := stop_state_list } ∈ M_0.symbol_arrow_list ∧
          q' ∈ stop_state_list
    | (Sum.inr (Sum.inr p'), Sum.inr (Sum.inr q')) =>
      ∃ stop_state_list,
        { start_state := p', symbol := c, stop_state_list := stop_state_list } ∈ M_1.symbol_arrow_list ∧
          q' ∈ stop_state_list
    | x => False