Nuprl - Proof: map append 1 2

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At: map append 1 2

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

B
4. A List
5. as' : A List
6. u : A
7. v : A List
8. map(f;v @ as') = (map(f;v) @ map(f;as'))

f(u).map(f;v @ as') = f(u).(map(f;v) @ map(f;as'))

By:	HypSubst 8 0

Generated subgoals:

None

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