Davis, Jedwab and Smith recently proved that there are no 2-dimensional Barker arrays except of size 2?2. We show that the existence of a (d+1)-dimensional Barker array implies the existence of a d-dimensional Barker array with the same number of ?1 elements. We deduce that there are no Barker arrays having more than two dimensions, as conjectured by Dymond in 1992.
Jonathan Jedwab, Matthew G. Parker