Nuprl - Proof: int seg ind 1 1 1 1 1

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At: int seg ind 1 1 1 1 1

1. i :

2. j : {i+1...}
3. E : {i..j

}

Prop
4. E(i)
5.

k:{(i+1)..j

}. E(k-1)

E(k)
6. n : {i..j

}
7.

k:{i..j

}. k<n

E(k)
8. n = i

E(n)

By:	Assert (n = i)

Generated subgoal:

1 9. n = i {i..j}
E(n)
1 step

About:

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