Module KnotLemmas_CovariantHeredPropOthRel
(K: KNOT__COVARIANT_HERED_PROP_OTH_REL).
Arguments unsquash_inj [k1 k2] _.
Arguments unsquash_approx [k n Fp] _.

Lemma approx_approx1 : forall m n,
approx n = approx n oo approx (m+n).