Nuprl - Proof: is commutative wf

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At: is commutative wf

A:Type, f:(A

A). is_commutative(A; x,z.f(x,z))

Prop

By:	Def of is_commutative(<term>; [binding],[binding].<term>)

Generated subgoals:

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IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html