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Proof step 10 from proof dec-int (previous step)

¬ m % 2 ≠ 0, 2 * i→n(i) = m + 1, i < 0 ⊦ decode(m) = i, i = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 11:
m % 2 = 0, 2 * i→n(i) = m + 1, i < 0 ⊦ i = 0, n→i(m / 2) = i

Rule argument

Additional information

Used simplifier rules: dec-int-pos: ⊦ n % 2 = 0 → decode(n) = n→i(n / 2);