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Proof step 1 from proof band-011x-is-unsigned-fix (conclusion)

⊦ 0 < i → band(j, 2 ^ i - 1) = bits2uint(fix(i→n(i), int2bits(j)))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
0 < i ⊦ band(j, 2 ^ i - 1) = bits2uint(fix(i→n(i), int2bits(j)))

Rule argument

Additional information

Used simplifier rules: ⊦ i < j ∧ 0 ≤ i → 0 < j; (forward)