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Proof step 19 from proof band-011x-neg (
previous step
)
¬ false ∈ bits0, bits ≠ [], bits.first, bitsand(false ' + bits0, bits) = false ' + bits1 ⊦ bits2uint(bits1) = 2 ^ n→i(# bits0) - bits2uint(bitsinvert(bits)) % 2 ^ n→i(# bits0) + 1
Lemma
and-011x-neg