Step * of Lemma bool-cardinality-le

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|𝔹| ≤ 2
BY
(((InstLemma `list-cardinality-le` [⌜𝔹⌝; ⌜[tt; ff]⌝])⋅ THENM Auto) THENW Auto) }

1
.....antecedent..... 
x:𝔹(x ∈ [tt; ff])


Latex:


Latex:
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|\mBbbB{}|  \mleq{}  2


By


Latex:
(((InstLemma  `list-cardinality-le`  [\mkleeneopen{}\mBbbB{}\mkleeneclose{};  \mkleeneopen{}[tt;  ff]\mkleeneclose{}])\mcdot{}  THENM  Auto)  THENW  Auto)




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