Nuprl Basics - Proof: sfa doc isect subtype 1

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At: sfa doc isect subtype 1

1. A : Type
2. B : A

Type
3. a : A

(

x:A. B(x))

B(a)

By:

Analyze

Generated subgoal:

1 4. x : x:A. B(x)
x B(a)
2 steps

About:

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