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