]
| #U1 #HTU1 #HU01
elim (lift_total U2 0 1) #U #HU2
- /6 width=11 by cpxs_strap1, cpx_lift, ldrop_ldrop, ex3_intro, or_intror/
+ /6 width=12 by cpxs_strap1, cpx_lift, ldrop_drop, ex3_intro, or_intror/
]
qed-.
#h #g #G1 #G2 #L1 #L2 #T1 #T2 #H @(fqus_ind … H) -G2 -L2 -T2 /2 width=5 by ex3_2_intro/
#G #G2 #L #L2 #T #T2 #_ #H2 #IH1 #K1 #HLK1 elim (IH1 … HLK1) -L1
#L0 #T0 #HT10 #HT0 #HL0 elim (lpxs_fquq_trans … H2 … HL0) -L
-#L #T3 #HT3 #HT32 #HL2 elim (fqus_cpxs_trans … HT0 … HT3) -T
+#L #T3 #HT3 #HT32 #HL2 elim (fqus_cpxs_trans … HT3 … HT0) -T
/3 width=7 by cpxs_trans, fqus_strap1, ex3_2_intro/
qed-.