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Proof step 2 from proof shiftzero-not-neg (previous step)

>>>(n, i, j) < 0, 0 ≤ i ∨ j ≠ 0 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ 0 ≤ i → >>>(n, i, j) = i >> j
Proof step 4:
¬ 0 ≤ i, >>>(n, i, j) < 0, 0 ≤ i ∨ j ≠ 0 ⊦

Rule argument

name: shiftzero-pos rotate: F subst: [j, i, n] → [j, i, n]

Additional information

Used simplifier rules: shiftright-not-neg: ⊦ 0 ≤ i → ¬ i >> j < 0; Used terms: j, i, n