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Proof step 107 from proof byte-law-and-one (previous step)

7 = # fillsgn(7, int2bits(i)), int2bits(j) = bits0 + bits, # bits = 8, 0 ≤ i, # int2bits(i) < 8 ⊦ lastn(8, fillsgn(8, bitsand(bits, int2bits(i)))) = lastn(8, fillsgn(8, bitsand(bits, false ' + fillsgn(7, int2bits(i))))), bits0 + bits = []

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

seq: ⊦ n = # bits → lastn(n, bits) = bits subst: [bits, n] → [fillsgn(8, bitsand(bits, int2bits(i))), 8] rotate: F spec: list-del inst: bitlista name: lastN-all

Additional information

Used terms: fillsgn(8, bitsand(bits, int2bits(i))), 8