4 citations · 4 across the 1 of their papers we have counts for
2 papers
math.CO2021★ 4 cited
On unimodular tournaments
Wiam Belkouche, Abderrahim Boussaïri, Abdelhak Chaïchaâ +1
A tournament is unimodular if the determinant of its skew-adjacency matrix is . In this paper, we give some properties and constructions of unimodular tournaments. A unimodular…
math.CO2021
Generalized tournament matrices with the same principal minors
Abderrahim Boussaïri, Abdelhak Chaïchaâ, Brahim Chergui +1
A generalized tournament matrix is a nonnegative matrix that satisfies , where is the all ones matrix and is the identity matrix. In this paper, a characte…