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Proof step 18 from proof shiftzero-zero-size (previous step)

i < 0 ⊦ j = 0, bits2int(firstn(# int2bits(i), mklist(false, i→n(j)) + int2bits(i))) = bits2int(firstn(1 + # int2bits(i), restn(0, mklist(false, i→n(j)) + false ' + int2bits(i))))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 19:
i < 0 ⊦ j = 0, bits2int(firstn(# int2bits(i), mklist(false, i→n(j)) + int2bits(i))) = bits2int(firstn(1 + # int2bits(i), mklist(false, i→n(j)) + false ' + int2bits(i)))

Rule argument

Additional information

Used simplifier rules: ⊦ restn(0, bits) = bits;