(6steps 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: length upto 1

1. n : 
2. 0<n
3. ||upto(n-1)|| ~ (n-1)
  ||upto(n)|| ~ n


By: RecUnfold `upto` 0 THEN SplitOnConclITE


Generated subgoals:

1 4. n = 0
  ||nil|| ~ n

Auto
2 4. n = 0
  ||upto(n-1) @ [(n-1)]|| ~ n

3 steps

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

(6steps total) PrintForm Definitions Lemmas mb event system 1 Sections EventSystems Doc