Nuprl - Proof: decidable ex int seg 1 2

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At: decidable ex int seg 1 2

1. i :

2. j :

3. F : {i..j

}

Prop
4.

k:{i..j

}. Dec(F(k))
5.

Dec(

k:{i..j

}. F(k))

By:

Select: 2

Generated subgoal:

1 (k:{i..j}. F(k))
1 step

About:

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