∀L1,L2,T. L1 ⪤[R,T] L2 →
∃∃L. L1 ≡[T] L & L ⪤[R] L2.
#R #H1R #H2R #L1 #L2 #T * #f1 #Hf1 #HL
-elim (sex_sdj_split_dx â\80¦ ceq_ext â\80¦ HL ð\9d\90\88ð\9d\90\9d) -HL
+elim (sex_sdj_split_dx â\80¦ ceq_ext â\80¦ HL ð\9d\90¢) -HL
[ #L0 #HL10 #HL02
lapply (sex_sdj … HL02 f1 ?) /2 width=1 by sdj_isid_sn/ #H
/3 width=5 by (* 2x *) ex2_intro/
∀L1,L2,T. L1 ⪤[R,T] L2 →
∃∃L. L1 ⪤[R] L & L ≡[T] L2.
#R #H1R #H2R #L1 #L2 #T * #f1 #Hf1 #HL
-elim (sex_sdj_split_sn â\80¦ ceq_ext â\80¦ HL ð\9d\90\88ð\9d\90\9d ?) -HL
+elim (sex_sdj_split_sn â\80¦ ceq_ext â\80¦ HL ð\9d\90¢ ?) -HL
[ #L0 #HL10 #HL02 |*: /2 width=1 by ext2_refl, sdj_isid_dx/ ] -H1R
lapply (sex_sdj … HL10 f1 ?) /2 width=1 by sdj_isid_sn/ #H
elim (frees_sex_conf_fsge … Hf1 … H) // -H2R -H #f0 #Hf0 #Hf01