| #T1 #HUT1 #HnUT1
lapply (teqx_cpx_trans … HU21 … HUT1) -HUT1
/6 width=5 by fpb_cpx, teqx_canc_sn, teqx_trans, ex3_2_intro/
-| /6 width=5 by fpb_lpx, rpx_teqx_div, teqx_reqx_conf, ex3_2_intro/
+| /6 width=5 by fpb_lpx, rpx_teqx_div, teqx_reqx_conf_sn, ex3_2_intro/
]
qed-.
[ #G #L2 #U #H2 elim (reqx_fqu_trans … H2 … HT) -K2
/3 width=5 by fpb_fqu, ex3_2_intro/
| #U #HTU #HnTU lapply (reqx_cpx_trans … HT … HTU) -HTU
- /5 width=11 by fpb_cpx, cpx_reqx_conf_sn, teqx_trans, teqx_reqx_conf, ex3_2_intro/ (**) (* time: 36s on dev *)
+ /5 width=11 by fpb_cpx, cpx_reqx_conf_sn, teqx_trans, teqx_reqx_conf_sn, ex3_2_intro/ (**) (* time: 36s on dev *)
| #L2 #HKL2 #HnKL2 elim (reqx_lpx_trans … HKL2 … HT) -HKL2
/6 width=5 by fpb_lpx, (* 2x *) reqx_canc_sn, ex3_2_intro/
]