mb nat Sections MarkB generic Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
TheoremName
Thm* k:, x,y,i:k. (y, x)((y, x)(i)) = i[flip_twice]
cites the following:
Thm* k:, x,y:k. (y, x) o (y, x) = (x.x)[flip_inverse]
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
mb nat Sections MarkB generic Doc