(13steps total) PrintForm Definitions Lemmas mb event system 1 Sections EventSystems Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: l member decomp 2 2 1

1. T : Type
2. T List
3. u : T
4. v : T List
5. x:T. (x  v (l1,l2:T List. v = (l1 @ [x] @ l2))
6. x : T
7. (x  v)
8. l1,l2:T List. v = (l1 @ [x] @ l2)
  l1,l2:T List. [u / v] = (l1 @ [x] @ l2)


By: ExRepD THEN InstConcl [[u / l1];l2]


Generated subgoal:

1 8. l1 : T List
9. l2 : T List
10. v = (l1 @ [x] @ l2)
  [u / v] = ([u / l1] @ [x] @ l2)

1 step

About:
listconsconsniluniverseequalallexists
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(13steps total) PrintForm Definitions Lemmas mb event system 1 Sections EventSystems Doc