Nuprl - Proof: nsub inj lop typing 1 1 1

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At: nsub inj lop typing 1 1 1

1. a :

2. b :

3. f :

b
4. Inj(

b; f)
5. x :

(a-1)

f(x)

{x:

x = f(a-1) }

By:

Analyze

Generated subgoal:

1 f(x) = f(a-1)
2 steps

About:

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