law bit_not
import lawful-words@0.1.0.0/proof_u32.bend as ProofU32import Base
import lawful-words@0.1.0.0/defs.bend as D
1308law bit_not:
1309 for +a: U32
1310 for +k: Nat
1311 {D.bit(U32.not(a), k) == (Nat.is_lt(k, 32n) && Bool.not(D.bit(a, k))) : Bool}