(4steps total) PrintForm Definitions NuprlPrimitives Sections NuprlLIB Doc
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At: sfa doc or dec 1 1

1. P : Prop
2. Q : Prop
3. P
  x:. (x = 0  P) & (x  0  Q)


By: Witness: 0


Generated subgoals:

None

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

(4steps total) PrintForm Definitions NuprlPrimitives Sections NuprlLIB Doc