case pred_const_ X xs | pred_var_ X xs | def_ X xs =>
  congr! 1
  simp only [List.map_eq_map_iff]
  exact h1
X : DefName
xs : List VarName
σ σ' : VarName → VarName
h1 : ∀ v ∈ xs, σ v = σ' v
⊢ def_ X (List.map σ xs) = def_ X (List.map σ' xs)
no goals