Nuprl - Proof: simple card cross assoc 1 1 2 1 1

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At: simple card cross assoc 1 1 2 1 1

1. A : Type
2. B : Type
3. C : Type
4. x3 : A
5. x4 : B
6. x2 : C

(

abc.abc/a,bc. bc/b,c. <<a,b>,c>)

((

xyz.xyz/xy,z. xy/x,y. <x,y,z>)(<<x3,x4>,x2>))

<<x3,x4>,x2>

By:	Reduce Concl

Generated subgoal:

1 <<x3,x4>,x2> = <<x3,x4>,x2>
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