/2 width=3 by ex2_intro/ qed-.
fact cnv_cpm_conf_lpr_atom_ess_aux (h) (G) (L1) (L2) (s):
- ∃∃T. ⦃G,L1⦄ ⊢ ⋆s ➡*[1,h] T & ⦃G,L2⦄ ⊢ ⋆(next h s) ➡*[h] T.
+ ∃∃T. ⦃G,L1⦄ ⊢ ⋆s ➡*[1,h] T & ⦃G,L2⦄ ⊢ ⋆(⫯[h]s) ➡*[h] T.
/3 width=3 by cpm_cpms, ex2_intro/ qed-.
fact cnv_cpm_conf_lpr_atom_delta_aux (a) (h) (G) (L) (i):