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Proof step 1 from proof sgn-2pot (conclusion)

⊦ sgn(true ' + mklist(false, n)) = true ' + mklist(false, n)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ bits ≠ [] ∧ (bits.first ↔ ¬ boolvar) → sgn(boolvar ' + bits) = boolvar ' + bits
Proof step 3:
¬(mklist(false, n) ≠ [] ∧ (mklist(false, n).first ↔ ¬ true)) ⊦ sgn(true ' + mklist(false, n)) = true ' + mklist(false, n)

Rule argument

name: sgn-base-03 rotate: F subst: [bits, boolvar] → [mklist(false, n), true]

Additional information

Used terms: mklist(false, n), true