Nuprl Basics - Proof: sfa doc fun ext 1 2

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At: sfa doc fun ext 1 2

1. A : Type
2. B : Type
3. f : A

B
4. g : A

B
5.

x:A. f(x) = g(x)

f = g

By:	FunExtensionality

Generated subgoal:

1 6. x : A
f(x) = g(x)
1 step

About:

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