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At:
one one corr 2 transitivity A,B,C:Type. (A ~ B) (B ~ C) (A ~ C)
By:
Def of Trans X,Y:Type. X ~ Y THEN BackThru: Thm* EquivRel X,Y:Type. X ~ Y
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
A,B,C:Type. (A ~ B) 
(B ~ C) 
Def of Trans X,Y:Type. X ~ Y THEN BackThru: Thm* EquivRel X,Y:Type. X ~ Y
