⊦ a[P](mk(rs, f, g)) ↔ P(mk(rs, f)) ∧ (∀ r. r ∈ rs → g(r) = a)
((P0 * P1))(mk(rs, f)), ∀ r. r ∈ rs → g(r) = a ⊦ ((a[P0] * a[P1]))(mk(rs, f, g))
Used terms: g, f, rs, P0 * P1, a