lemma fqu_wf_ind: ∀b. ∀Q:relation3 …. (
∀G1,L1,T1. (∀G2,L2,T2. ⦃G1,L1,T1⦄ ⬂[b] ⦃G2,L2,T2⦄ → Q G2 L2 T2) →
- Q G1 L1 T1
- ) → ∀G1,L1,T1. Q G1 L1 T1.
+ Q G1 L1 T1
+ ) → ∀G1,L1,T1. Q G1 L1 T1.
#b #Q #HQ @(f3_ind … fw) #x #IHx #G1 #L1 #T1 #H destruct /4 width=2 by fqu_fwd_fw/
qed-.