Nuprl - Proof: hsum iso def 1 2 2 1 1 2 1

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At: hsum iso def 1 2 2 1 1 2 1

1. 'a : S
2. 'b : S
3. y : 'b
4. x : 'a
5.

True

inr(y) = inl(x)

'a+'b

By:	Simpsetp [`nlogic`]

Generated subgoals:

None

About:

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