∀L,V,k. RP L (ⓐ⋆k.V) → RP L V.
definition CP4 ≝ λRR:lenv→relation term. λRS:relation term.
- ∀L0,L,T,T0,d,e. NF … (RR L) RS T →
+ ∀L0,L,T,T0,d,e. NF … (RR L) RS T →
⇩[d, e] L0 ≡ L → ⇧[d, e] T ≡ T0 → NF … (RR L0) RS T0.
definition CP4s ≝ λRR:lenv→relation term. λRS:relation term.