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Step * 1 1 2 of Lemma not-btrue-sqle-bottom


1. tt ≤ ⊥
2. tt ~ ⊥
3. (⊥)↓
⊢ False
BY
{ BotDiv }

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Latex:

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Latex:

1.  tt  \mleq{}  \mbot{}
2.  tt  \msim{}  \mbot{}
3.  (\mbot{})\mdownarrow{}
\mvdash{}  False


By

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Latex:
BotDiv

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