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4 (* ||A|| A project by Andrea Asperti *)
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15 include "basic_2/rt_transition/cpm.ma".
16 include "basic_2/rt_transition/cnh.ma".
18 (* NORMAL TERMS FOR HEAD T-UNUNBOUND RT-TRANSITION **************************)
20 (* Advanced properties ******************************************************)
22 axiom cnh_cpm_trans (h) (n) (G) (L):
23 ∀T1,T2. ⦃G,L⦄ ⊢ T1 ➡[n,h] T2 → ⦃G,L⦄ ⊢ ⥲[h] 𝐍⦃T1⦄ → ⦃G,L⦄ ⊢ ⥲[h] 𝐍⦃T2⦄.
25 #h #n #G #L #T1 #T2 #HT1 #n #T2 #HT12 #k #X #HX