Step
*
1
1
1
1
2
of Lemma
logic5
1.
 
[P]
 
:
 
2.
 
P@i
3.
 
False@i
 
False
BY
{
 
NthHyp
 
3
 
}
1.  [P]  :  \mBbbP{}
2.  P@i
3.  False@i
\mvdash{}  False
By
NthHyp  3
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