-lemma isfin_ind (R:predicate rtmap): (â\88\80f. ð\9d\90\88â¦\83fâ¦\84 → R f) →
- (â\88\80f. ð\9d\90\85â¦\83fâ¦\84 â\86\92 R f â\86\92 R (â\86\91f)) →
- (â\88\80f. ð\9d\90\85â¦\83fâ¦\84 â\86\92 R f â\86\92 R (⫯f)) →
- â\88\80f. ð\9d\90\85â¦\83fâ¦\84 → R f.
+lemma isfin_ind (R:predicate rtmap): (â\88\80f. ð\9d\90\88â\9dªfâ\9d« → R f) →
+ (â\88\80f. ð\9d\90\85â\9dªfâ\9d« â\86\92 R f â\86\92 R (⫯f)) →
+ (â\88\80f. ð\9d\90\85â\9dªfâ\9d« â\86\92 R f â\86\92 R (â\86\91f)) →
+ â\88\80f. ð\9d\90\85â\9dªfâ\9d« → R f.