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Proof step 3 from proof sgn-mklist-02 (previous step)

∀ bits. sgn(false ' + mklist(false, m) + bits) = sgn(false ' + bits) ⊦ sgn(false ' + mklist(false, m) + bits) = sgn(false ' + bits)

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 1 terms: bits

Additional information

Used simplifier rules: ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1; Used terms: bits