Nuprl - Proof: union sigma inverses 1 1 1

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At: union sigma inverses 1 1 1

1. A : Type
2. B : Type
3. a : A

sigma_to_union(union_to_sigma(inl(a))) = inl(a)

A+B

By:	Compute sigma_to_union(union_to_sigma(inl(a))) * inl(a)

Generated subgoals:

None

About:

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html