(6steps total) PrintForm Definitions mb event system 1 Sections EventSystems Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: firstn all

  L:Top List, n:. ||L||n  (firstn(n;L) ~ L)

By: InductionOnList THEN Reduce 0 THEN Try (Complete Auto)


Generated subgoal:

1 1. Top List
2. u : Top
3. v : Top List
4. n:. ||v||n  (firstn(n;v) ~ v)
  n:. ||v||+1n  (firstn(n;[u / v]) ~ [u / v])

5 steps

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

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