Nuprl - Proof: hsnd def 1 1

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At: hsnd def 1 1

1. 'a : S
2. 'b : S
3. x : hprod('a; 'b)
4. y : 'b
5.

x@1:'a. mk_pair(x@1,y) = rep_prod(x)

2of(x) = y

By:	Last Analyze THEN StrongAuto THEN Unab [`hrep_prod`;`hmk_pair`] THEN Simp THEN StrongAuto

Generated subgoal:

1 5. x@1 : 'a
6. (a:'a. b:'b. (a = x@1)(b = y))
6. =
6. (a:'a. b:'b. (a = 1of(x))(b = 2of(x)))
6. ('a 'b hbool)
2of(x) = y
1 step

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