2 papers
math.RA2020
Orthogonality for tropical normal matrices
Bakhad Bakhadly, Alexander Guterman, María Jesús de la Puente
We study pairs of mutually orthogonal normal matrices with respect to tropical multiplication. Minimal orthogonal pairs are characterized. The diameter and girth of three graphs ar…
math.CO2016
Orthogonality graph of the algebra of upper triangular matrices
Bakhad Bakhadly
We study the connectedness and the diameter of orthogonality graphs of upper triangular matrix algebras over arbitrary fields.