Def  {i..j} == {k:| i  k < j }

is mentioned by

Def  AB == i:2. if i=0 A else B fi

[isect_two]

In prior sections: int 1 bool 1

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