| true, ∀ bits0. # bits0 < # bits → true → (bits0 +1 = true ' ↔ bits0 = false ' ∨ bits0 = []) ⊦ bits +1 = true ' ↔ bits = false ' ∨ bits = [] |
∀ bits0. # bits0 < # bits → true → (bits0 +1 = true ' ↔ bits0 = false ' ∨ bits0 = []) ⊦ bits +1 = true ' ↔ bits = false ' ∨ bits = []