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IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
Iterating over only identity values gives the identity value itself.

At: iter via intseg all units

  A:Type, f:(AAA), u:A.
  is_ident(A; f; u)
  
  (a,b:, e:({a..b}A).
  ((i:{a..b}. e(i) = u)  (Iter(f;u) i:{a..b}. e(i)) = u)
By: Guarding (a:<type>. <prop>) Auto

Generated subgoal:

1 1. A : Type
2. f : AAA
3. u : A
4. is_ident(A; f; u)
  a,b:, e:({a..b}A).
  (i:{a..b}. e(i) = u)  (Iter(f;u) i:{a..b}. e(i)) = u
6 steps

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

(7steps total) PrintForm Definitions Lemmas IteratedBinops Sections DiscrMathExt Search Doc