DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
TheoremName
Thm*  {x:{x:AP(x) }| Q(x) } ~ {x:AP(x) & Q(x) }[card_subset_vs_and]
cites the following:
Thm*  {x:{x:AP(x) }| Q(x) } =ext {x:AP(x) & Q(x) }[exteq_subset_vs_and]
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
DiscreteMath Sections DiscrMathExt Doc