⊦ i2b(i) = i2b(j) ↔ b2i(i2b(i)) = b2i(i2b(j))
0 < i, 0 ≤ i, 127 < i, i % 256 ≤ 127, i % 256 < i ⊦ b2i(i2b(~ i)) = b2i(i2b(~(i % 256)))
Used terms: ~(i % 256), ~ i