(2steps total) PrintForm Definitions hol prim rec Sections HOLlib Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: pre nuprl 1
1. n : 
2. n>0
  pre(n) = n-1
By: Unab [`pre`] THEN BifCase THEN Simp THEN StrongAuto

Generated subgoals:

None

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

(2steps total) PrintForm Definitions hol prim rec Sections HOLlib Doc