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Definitions
finite
sets
Sections
AutomataTheory
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At:
phole
aux
2
1
1
1
2
1
2
1
1.
n:
{2...}
2.
f:(
n
(-1+n)).
i:
n, j:
i. f(i) = f(j)
3.
f:
(1+n)
n
4.
ii:{1..(1+n)
}, jj:
ii.
f(ii) = f(jj)
5.
i:
n
6.
j:
i
7.
f(i) = n-1
8.
f(j) = n-1
9.
f(n) = f(j)
f(n)
(-1+n)
By:
Inst [n;i] 4
Generated subgoals:
None
About:
f:(
n
(-1+n)). 
i:n, j:i. f(i) = f(j)(1+n)nii:{1..(1+n)
}, jj:ii. 
f(ii) = f(jj)nif(j) = n-1f(n) = f(j)
f(n) 
(-1+n)
