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Proof step 991 from proof bitsand-cast (previous step)

# bits = # bits1 ⊦ bits1 = [], bits = [], bits1 = lastn(# bits1, bitsand(bits2, bits3) + bits1), bits3 + bits = [], bits2 + bits1 = [], bits3 = [], bits2 = [], true ∈ bits1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 992:
⊦ n = # bits → lastn(n, bits0 + bits) = bits

Rule argument

seq: ⊦ n = # bits → lastn(n, bits0 + bits) = bits subst: [bits, bits0, n] → [bits1, bitsand(bits2, bits3), # bits1] rotate: F spec: list-del inst: bitlista name: lastN-append

Additional information

Used terms: bits1, bitsand(bits2, bits3), # bits1