End PointsToLemmas.
Hint Resolve domeqPt domeqPtUn domeqUnPt : core.
Prenex Implicits validPtUn_cond findPt_inv um_eta2.
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(* Topped structure *)
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Module UnionClassTPCM.
Section UnionClassTPCM.
Variables (K : ordType) (V : Type) (U : union_map_class K V).
Implicit Type f : U.

Lemma umPt0E (k : K) (v : V) : (k \\-> v == Unit) = false.