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At: eval trivial factorization 1 1 1 1

1. a : 
2. b : 
3. j : {a..b}
4. trivial_factorization(j)(j) = 1
  ( i:{a..j}. 1)j( i:{j+1..b}. 1) = j


By: Rewrite by
Thm*  a,b:e:({a..b}). (i:{a..b}. e(i) = 1)  ( i:{a..b}. e(i)) = 1


Generated subgoal:

1   1j1 = j
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