Nuprl - Proof: inj point deletion 1 1 1 1

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At: inj point deletion 1 1 1 1

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

B
4. Inj(A; B; f)
5. a : A
6. x : A
7. f(x) = f(a)

x = a

By:	BackThru: Inj(A; B; f)

Generated subgoals:

None

About:

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