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Proof step 7 from proof fits-law-div (previous step)

b2i(by1) / i = b2i(i2b(b2i(by1) / i)) ⊦ i = 0, b2i(by1) / i = s2i(i2s(b2i(by1) / i)), i = ~1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 8:
~32768 ≤ i, i ≤ 32767 ⊦ s2i(i2s((* i))) = i
Proof step 9:
¬(~32768 ≤ b2i(by1) / i ∧ b2i(by1) / i ≤ 32767), b2i(by1) / i = b2i(i2b(b2i(by1) / i)) ⊦ i = 0, b2i(by1) / i = s2i(i2s(b2i(by1) / i)), i = ~1

Rule argument

name: num-issi rotate: F subst: [i] → [b2i(by1) / i]

Additional information

Used terms: b2i(by1) / i