Def exists == p:'a. x:'a. (p(x))

is mentioned by

Thm* exists(rep:hnum  hind. type_definition(is_num_rep,rep))

[hnum_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