(* Properties with test for costrained rt-transition counter ****************)
-lemma isr_shift: â\88\80c. ð\9d\90\91ð\9d\90\93â¦\830,câ¦\84 â\86\92 ð\9d\90\91ð\9d\90\93â¦\830,â\86\95*câ¦\84.
+lemma isr_shift: â\88\80c. ð\9d\90\91ð\9d\90\93â\9dª0,câ\9d« â\86\92 ð\9d\90\91ð\9d\90\93â\9dª0,â\86\95*câ\9d«.
#c * #ri #rs #H destruct /2 width=3 by ex1_2_intro/
qed.
(* Inversion properties with test for costrained rt-counter *****************)
-lemma isrt_inv_shift: â\88\80n,c. ð\9d\90\91ð\9d\90\93â¦\83n,â\86\95*câ¦\84 â\86\92 ð\9d\90\91ð\9d\90\93â¦\830,câ¦\84 ∧ 0 = n.
+lemma isrt_inv_shift: â\88\80n,c. ð\9d\90\91ð\9d\90\93â\9dªn,â\86\95*câ\9d« â\86\92 ð\9d\90\91ð\9d\90\93â\9dª0,câ\9d« ∧ 0 = n.
#n #c * #ri #rs #H
elim (shift_inv_dx … H) -H #rt0 #rs0 #ti0 #ts0 #_ #_ #H1 #H2 #H3
elim (max_inv_O3 … H1) -H1 /3 width=3 by ex1_2_intro, conj/
qed-.
-lemma isr_inv_shift: â\88\80c. ð\9d\90\91ð\9d\90\93â¦\830,â\86\95*câ¦\84 â\86\92 ð\9d\90\91ð\9d\90\93â¦\830,câ¦\84.
+lemma isr_inv_shift: â\88\80c. ð\9d\90\91ð\9d\90\93â\9dª0,â\86\95*câ\9d« â\86\92 ð\9d\90\91ð\9d\90\93â\9dª0,câ\9d«.
#c #H elim (isrt_inv_shift … H) -H //
qed-.