Def  {i...j} == {k:| ik & kj }

is mentioned by

Thm*  f:(AAA), u:A. Thm*  is_ident(A; f; u) Thm*   Thm*  is_assoc_sep(A; f) Thm*   Thm*  (a,b:, c:{a...b}, d:{c..b}, e:({a..b}A). Thm*  ((i:{a..b}. i<c  di  e(i) = u) Thm*  ( Thm*  ((Iter(f;u) i:{a..b}. e(i)) = (Iter(f;u) i:{c..d}. e(i)))

[iter_via_intseg_amputate_units]

In prior sections: int 1

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