(8steps total) PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: decbl iff some bool 1 1
1. P : Prop
2. Dec(P)
3. P
  b:. b  P
By: Witness: true

Generated subgoal:

1 4. P
  true
1 step

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

(8steps total) PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc