(*selected standard assumptions:*)

Lemma eff_after_check5b:
forall nu' mu' frgnSrc' frgnTgt'
(Mu'Hyp: mu' = replace_externs nu' frgnSrc' frgnTgt')
kappa m1 m2 (SEP: sm_inject_separated kappa nu' m1 m2),
sm_inject_separated kappa mu' m1 m2.