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Step * of Lemma band-simplify

∀[b:𝔹]. ∀[f:Top].  (b ∧b f[b] ~ b ∧b f[tt])
BY
{ ((D 0 THENA Auto) THEN RW (SweepUpC BandC) 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[b:\mBbbB{}].  \mforall{}[f:Top].    (b  \mwedge{}\msubb{}  f[b]  \msim{}  b  \mwedge{}\msubb{}  f[tt])


By

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Latex:
((D  0  THENA  Auto)  THEN  RW  (SweepUpC  BandC)  0  THEN  Auto)

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