IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
card union vs sigma1 1. A : Type
2. B : Type
f:((A+B)(i:2if i=0 A else B fi)),
g:((i:2if i=0 A else B fi)(A+B)).
InvFuns(A+B;i:2if i=0 A else B fi;f;g)
By:
Witness: union_to_sigma | sigma_to_union
THEN
BackThru:
Thm* InvFuns(A+B;i:2if i=0 A else B fi;union_to_sigma;sigma_to_union)
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html