inline "cic:/CoRN/model/structures/Nsec/ap_nat.con".
+(* NOTATION
+Infix "{#N}" := ap_nat (no associativity, at level 90).
+*)
+
inline "cic:/CoRN/model/structures/Nsec/ap_nat_irreflexive0.con".
inline "cic:/CoRN/model/structures/Nsec/ap_nat_symmetric0.con".