L1 ≛[T1] L2 → L1 ≛[T2] L2.
/3 width=5 by cpms_fwd_cpxs, cpxs_reqx_conf_sn/ qed-.
lemma cpms_reqx_conf_dx (h) (n) (G) (L1) (L2):
L1 ≛[T1] L2 → L1 ≛[T2] L2.
/3 width=5 by cpms_fwd_cpxs, cpxs_reqx_conf_sn/ qed-.
lemma cpms_reqx_conf_dx (h) (n) (G) (L1) (L2):