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Proof step 10 from proof sgn-append-06 (previous step)

sgn((bits + boolvar ') + bits1) = sgn(bits + boolvar ') + bits1, (¬ boolvar) ∈ bits ⊦ sgn(bits + boolvar ') = sgn(bits) + boolvar '

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

name: sgn-last-04 rotate: F subst: [boolvar, bits] → [boolvar, bits]

Additional information

Used terms: boolvar, bits