Definitions NuprlPrimitives Sections NuprlLIB Search Doc
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
sfa_doc_exteqDef A =ext B == (X:AX  B) & (X:BX  A)
singletonDef {a:T} == {x:Tx = a  T }
Thm* T:Type, a:T. {a:T Type

About:
setsfa_doc_extequniverseequalmemberandall!abstraction
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions NuprlPrimitives Sections NuprlLIB Search Doc