(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 2 1

1. P : Prop
2. b : 
3. b  P
  Dec(P)


By: Rewrite by b  P


Generated subgoals:

None

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

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