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At: singleton support sum

  n:f:(n), m:n.
  (x:nx = m  f(x) = 0)  sum(f(x) | x < n) = f(m)


By: Auto


Generated subgoal:

1 1. n : 
2. f : n
3. m : n
4. x:nx = m  f(x) = 0
  sum(f(x) | x < n) = f(m)

5 steps

About:
intnatural_numberfunctionequalimpliesall
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(6steps total) PrintForm Definitions Lemmas mb nat Sections MarkB generic Doc