End Knot_CovariantHeredPropOthRel.
Module KnotLemmas_CovariantHeredPropOthRel
(K: KNOT__COVARIANT_HERED_PROP_OTH_REL).

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