Open Access. Powered by Scholars. Published by Universities.®
Discrete Mathematics and Combinatorics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Discrete Mathematics and Combinatorics
Nonexistence Of Certain Perfect Binary Arrays, Jonathan Jedwab, James A. Davis
Nonexistence Of Certain Perfect Binary Arrays, Jonathan Jedwab, James A. Davis
Department of Math & Statistics Faculty Publications
A perfect binary array (PBA) is an r-dimensional matrix with elements ±I such that all out-of-phase periodic autocorrelation coefficients are zero. The two smallest sizes for which the existence of a PBA is undecided, 2 x 2 x 3 x 3 x 9 and 4 x 3 x 3 x 9, are ruled out using computer search and a combinatorial argument.