(3steps total) PrintForm Definitions hol Sections HOLlib Doc
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At: excluded middle 1 1
1. P : Prop
  P  P
By: UnAb [`false`;`not`;`or`] THEN UseWitness (lem(P))

Generated subgoals:

None

About:
applypropor
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(3steps total) PrintForm Definitions hol Sections HOLlib Doc