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

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At: simple card cross assoc 1 1 2 1

1. A : Type
2. B : Type
3. C : Type
4. x1 : A

B
5. x2 : C

(

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

xyz.xyz/xy,z. xy/x,y. <x,y,z>)(<x1,x2>))

<x1,x2>

By:

Analyze-2

Generated subgoal:

1 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>
2 steps

About:

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