ɐ bˈuːliən dᵻlˈeɪ ᵻkwˈeɪʒən bˌiːdˌiːˈiː ɪz ɐn ˌɛvəlˈuːʃən ɹˈuːl fɚðə stˈeɪt ʌv daɪnˈæmɪkəl vˈɛɹɪəbəlz hˌuːz vˈæljuːz mˈeɪ biː ɹˌɛpɹᵻzˈɛntᵻd baɪ ɐ fˈaɪnaɪt dɪskɹˈiːt nˈʌmbɚz ˌoʊˈɛs stˈeɪts, sˈʌtʃ ɐz zˈiəɹoʊ ænd wˈʌn.
A Boolean Delay Equation (BDE) is an evolution rule for the state of dynamical variables whose values may be represented by a finite discrete numbers os states, such as 0 and 1.