Nuprl - Proof: simple card cross assoc 1 1 2

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At: simple card cross assoc 1 1 2

1. A : Type
2. B : Type
3. C : Type
4. xyz : (A

(

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

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

xyz

By:

Analyze-1

Generated subgoal:

1 4. x1 : AB
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>
3 steps

About:

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