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Proof step 5 from proof ubyte-zero-01 (previous step)

ub2i(by) = 0, 0 < b2i(by) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ 0 ≤ b2i(by) → ub2i(by) = b2i(by)

Rule argument

name: ubyte-pos rotate: F subst: [by] → [by]

Additional information

Used simplifier rules: ⊦ i < j → ¬ j < i;% ⊦ ¬ i ≤ j ↔ j < i;% ⊦ i < j ∧ j ≤ j0 → i < j0; (forward)% ⊦ j ≤ i ∧ i ≤ 0 → j ≤ 0; (forward) Used terms: by