(* Constructions with pr_tls ************************************************)
-lemma pr_isf_tls (n) (f): ð\9d\90\85â\9dªfâ\9d« â\86\92 ð\9d\90\85â\9dªâ«°*[n]fâ\9d«.
+lemma pr_isf_tls (n) (f): ð\9d\90\85â\9d¨fâ\9d© â\86\92 ð\9d\90\85â\9d¨â«°*[n]fâ\9d©.
#n @(nat_ind_succ … n) -n /3 width=1 by pr_isf_tl/
qed.
(* Inversions with pr_tls ***************************************************)
(*** isfin_inv_tls *)
-lemma pr_isf_inv_tls (n) (g): ð\9d\90\85â\9dªâ«°*[n]gâ\9d« â\86\92 ð\9d\90\85â\9dªgâ\9d«.
+lemma pr_isf_inv_tls (n) (g): ð\9d\90\85â\9d¨â«°*[n]gâ\9d© â\86\92 ð\9d\90\85â\9d¨gâ\9d©.
#n @(nat_ind_succ … n) -n /3 width=1 by pr_isf_inv_tl/
qed-.