(* Basic_2A1: uses: nta_fwd_csn *)
theorem nta_fwd_fsb (h) (a) (G) (L):
∀T,U. ❪G,L❫ ⊢ T :[h,a] U →
(* Basic_2A1: uses: nta_fwd_csn *)
theorem nta_fwd_fsb (h) (a) (G) (L):
∀T,U. ❪G,L❫ ⊢ T :[h,a] U →
- ∧∧ ≥𝐒[h] ❪G,L,T❫ & ≥𝐒[h] ❪G,L,U❫.
+ ∧∧ ≥𝐒 ❪G,L,T❫ & ≥𝐒 ❪G,L,U❫.