| rs1 ∩ rs0 = ∅, o[xv(x)][rs1, cf, af], R[rs0, cf, af] ⊦ (o[_∃ xv] * R)[rs1 ∪ rs0, cf, af] |
⊦ R[rs, cf, af] ↔ R(mk(rs, cf, af))
rs1 ∩ rs0 = ∅, R[rs0, cf, af], o[xv(x)](mk(rs1, cf, af)) ⊦ (o[_∃ xv] * R)[rs1 ∪ rs0, cf, af]
Used terms: af, cf, rs1, o[xv(x)]