On the DJL conjecture for order 6
On the DJL conjecture for order 6
In 1994 Drew, Johnson and Loewy conjectured that for n 4 , the cp-rank of any n × n completely positive matrices is at most n 2 /4 .Recently this conjecture has been proved for n = 5 and disproved for n 7 , leaving the case n = 6 …