Step * 1 of Lemma bnot_bnot_elim


1. : 𝔹
⊢ ¬b¬bp
BY
BoolEval }

1
tt tt

2
ff ff


Latex:


Latex:

1.  p  :  \mBbbB{}
\mvdash{}  \mneg{}\msubb{}\mneg{}\msubb{}p  =  p


By


Latex:
BoolEval




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