At: incl aux4 quo 1 1 1
1. n: {1...}
2. E:
n

n
Prop
3. EquivRel i,j:
n. i E j
4. x1:
n
5. x2:
n
6. x1 E x2
7.
x1 = n-1
i,j:
n//(i E j)
8. EquivRel x,y:
(n-1). x E y
x1 = x2
i,j:
(n-1)//(i E j)
By: Analyze
Generated subgoals:1 | x1 < n-1 |
2 | x2 < n-1 |
3 | x1 E x2 |
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