(15steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc
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At: decidable vs unique nsub2 1 2 1 2

1. P : Prop
2. i : 2
3. P
4. i  0
  Dec(P)


By: Select: 2


Generated subgoals:

None

About:
intnatural_numberprop
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(15steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc