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4 (* ||A|| A project by Andrea Asperti *)
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7 (* ||T|| The HELM team. *)
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15 include "basic_2/rt_transition/cnx.ma".
16 include "basic_2/rt_computation/csx.ma".
18 (* STRONGLY NORMALIZING TERMS FOR EXTENDED PARALLEL RT-TRANSITION ***********)
20 (* Properties with normal terms for extended parallel rt-transition *********)
22 (* Basic_1: was just: sn3_nf2 *)
23 lemma cnx_csx (G) (L):
24 ∀T. ❨G,L❩ ⊢ ⬈𝐍 T → ❨G,L❩ ⊢ ⬈*𝐒 T.
25 /2 width=1 by NF_to_SN/ qed.
27 (* Advanced properties ******************************************************)
29 lemma csx_sort (G) (L):
31 /3 width=4 by cnx_csx, cnx_sort/ qed.