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Proof step 8 from proof shiftright-not-pos-01 (previous step)

i < 0 ⊦ sublist(0, # int2bits(i), mklist(true, i→n(j)) + int2bits(i)).first

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 9:
⊦ sublist(m, n, bits) = firstn(n, restn(m, bits))
Proof step 10:
i < 0 ⊦ firstn(# int2bits(i), restn(0, mklist(true, i→n(j)) + int2bits(i))).first

Rule argument

seq: ⊦ sublist(m, n, bits) = firstn(n, restn(m, bits)) subst: [bits, n, m] → [mklist(true, i→n(j)) + int2bits(i), # int2bits(i), 0] rotate: F spec: list-del inst: bitlista name: sublist-def

Additional information

Used terms: mklist(true, i→n(j)) + int2bits(i), # int2bits(i), 0