Definition squash_unsquash := K.squash_unsquash.
Definition unsquash_squash := K.unsquash_squash.
Definition knot_age1 := K.knot_age1.
Definition knot_level := K.knot_level.
End Knot_MixVariantHeredProp.
Module KnotLemmas_MixVariantHeredProp (K': KNOT__MIXVARIANT_HERED_PROP).
Module K := K'.

(* Specifications: *)
Lemma unsquash_inj : forall k1 k2,
unsquash k1 = unsquash k2 ->
k1 = k2.