Def A == A  False

is mentioned by

Thm* i,j:enum1(). i = j  ((i=j) ~ false)

[eq_enum1_eq_false_intro]

In prior sections: core bool 1 sqequal 1

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