Canonical pseries_group : {group gT} := group pseries_group_set.Local Notation ConsPred p := (@Cons nat_pred p%N) (only parsing).Implicit Types (A : {set aT}) (G H : {group aT}).

Lemma pseries_subfun pis : GFunctor.closed (@pseries pis) /\ GFunctor.pcontinuous (@pseries pis).