Nuprl - Proof: hsum ty def 1 1

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At: hsum ty def 1 1

1. 'a : S
2. 'b : S
3. x' : hsum('a; 'b)
4. x'' : hsum('a; 'b)
5. rep_sum(x') = rep_sum(x'')

x' = x''

By:	L Thm* 'a,'b:S, u,v:'a+'b. rep_sum(u) = rep_sum(v) 'a'b u = v THEN StrongAuto THEN Try (Complete (Unfold `label` 0))

Generated subgoals:

None

About:

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