(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 2

1. P : Prop
2. Dec(P)
3. P
  b:b  P


By: Witness: false


Generated subgoal:

1 4. false
  P

1 step

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

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