Def type_definition == P:'a. rep:'b'a. type_definition('a;'b;P;rep)

is mentioned by

Thm* 'a,'b:S. Thm* exists Thm* (rep:hprod('a; 'b)  'a  'b  hbool. type_definition(is_pair,rep))

[hprod_ty_def]

In prior sections: hol bool

Try larger context: HOLlib IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html