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Proof step 5 from proof byte-law-leftshift (previous step)

⊦ i2b(cast(8, i i<< j)) = i2b(b2i(i2b(i)) i<< j)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ b2i(i2b(i)) = cast(8, i)
Proof step 7:
⊦ i2b(cast(8, i i<< j)) = i2b(cast(8, i) i<< j)

Rule argument

name: byte-is-cast rotate: F subst: [i] → [i]

Additional information

Used terms: i