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Proof step 1 from proof short-law-leftshift (conclusion)

⊦ i2s(i i<< j) = i2s(s2i(i2s(i)) i<< j)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ i2s(i) = i2s(cast(16, i))
Proof step 3:
⊦ i2s(cast(16, i i<< j)) = i2s(s2i(i2s(i)) i<< j)

Rule argument

name: short-is-cast-01 rotate: F subst: [i] → [i i<< j]

Additional information

Used terms: i i<< j