(* Constructions with pr_tl *************************************************)
(*** isfin_tl *)
-lemma pr_isf_tl (f): ð\9d\90\85â\9dªfâ\9d« â\86\92 ð\9d\90\85â\9dªâ«°fâ\9d«.
+lemma pr_isf_tl (f): ð\9d\90\85â\9d¨fâ\9d© â\86\92 ð\9d\90\85â\9d¨â«°fâ\9d©.
#f elim (pr_map_split_tl f) * #Hf
/3 width=3 by pr_isf_inv_push, pr_isf_inv_next/
qed.
(* Inversions with pr_tl ****************************************************)
(*** isfin_inv_tl *)
-lemma pr_isf_inv_tl (g): ð\9d\90\85â\9dªâ«°gâ\9d« â\86\92 ð\9d\90\85â\9dªgâ\9d«.
+lemma pr_isf_inv_tl (g): ð\9d\90\85â\9d¨â«°gâ\9d© â\86\92 ð\9d\90\85â\9d¨gâ\9d©.
#f elim (pr_map_split_tl f) * #Hf
/2 width=1 by pr_isf_next, pr_isf_push/
qed-.