mb list 1 Sections MarkB generic Doc
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TheoremName
Thm* A,B:Type, f:(AB), l:A List. map(f;l B List[map_wf_listp]
cites the following:
Thm* f:(AB), as:A List. ||map(f;as)|| = ||as||  [map_length]
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
mb list 1 Sections MarkB generic Doc