Rosário Fernandes

collaborators

2 papers

math.CO2026

Condensation of the digraph associated with a reciprocal matrix and a vector

Rosário Fernandes

Reciprocal matrices are a fundamental tool in the Analytic Hierarchy Process (AHP), where priority vectors are typically derived from pairwise comparisons. The efficiency of a posi…

math.CO2019

Matrices in $A (R, S)$ with minimum $t$ -term ranks

Rosário Fernandes, Henrique F. da Cruz, Susana Palheira

Let $R$ and $S$ be two sequences of nonnegative integers in nonincreasing order and with the same sum, and let $A (R, S)$ be the class of all $(0, 1)$ -matrices having row sum $…

Condensation of the digraph associated with a reciprocal matrix and a vector

Matrices in A(R,S) with minimum t-term ranks

Matrices in $A (R, S)$ with minimum $t$ -term ranks