IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
fun with inv2 is bij rev A,B:Type, f:(AB), g:(BA). InvFuns(A;B;f;g) Bij(B; A; g)
By:
Auto
THEN
Use:[f] BackThru: Thm* InvFuns(A;B;f;g) Bij(A; B; f)
THEN
BackThru: Thm* InvFuns(A;B;f;g) InvFuns(B;A;g;f)
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html