DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
This fact is also a special case of

Ob Not Found: nsub_inj_factoid

as is exploited in the proof nsub inj factorial of the same fact. IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

DiscreteMath Sections DiscrMathExt Doc