Definition knot_level := K.knot_level.Definition knot_age1 := K.knot_age1.Module K' := KnotProp2Knot(K.TF)(K).Module KL := Knot_Lemmas(K').

Lemma unsquash_inj : forall k1 k2, unsquash k1 = unsquash k2 -> k1 = k2.