Characterization of Erdös matrices by their zero entries

Priyanka Karmakar, Hariram Krishna, Souvik Pal +1

An Erdös matrix $E$ is a bistochastic matrix whose sum of squares of entries (Frobenius norm squared) equals its maxtrace (maximum of all the $\ddot{I}ƒ$-traces for permutations $\ddot{I}ƒ$'s).…