English
The bitwise OR distributes over the bit construction: bit a m ||| bit b n = bit (a ∨ b) (m ||| n).
Русский
Побитовое OR распространяется через конструирование бит: bit a m ||| bit b n = bit (a ∨ b) (m ||| n).
LaTeX
$$$$ \\text{bitarith: } bit\\ a\\ m \\lor\\lor\\ bit\\ b\\ n = bit (a \\lor b) (m \\lor\\lor n) $$$$
Lean4
@[simp]
theorem lor_bit : ∀ a m b n, bit a m ||| bit b n = bit (a || b) (m ||| n) :=
bitwise_bit