IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
member append121 1. T : Type
2. x : T 3. T List
4. l2 : T List
5. (x nil)
(xl2)
By:
Unfold `l_member` -1 THEN Reduce -1 THEN ExRepD
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html