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Step * of Lemma bor-bfalse

∀[b:𝔹]. (b ∨bff ~ b)
BY
{ ((D 0 THENA Auto) THEN AutoBoolCase ⌜b⌝⋅) }

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Latex:

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Latex:
\mforall{}[b:\mBbbB{}].  (b  \mvee{}\msubb{}ff  \msim{}  b)


By

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Latex:
((D  0  THENA  Auto)  THEN  AutoBoolCase  \mkleeneopen{}b\mkleeneclose{}\mcdot{})

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