Nair Maria Maia de Abreu

According to our database, Nair Maria Maia de Abreu authored at least 20 papers between 2002 and 2020.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2020

Graphs with all but two eigenvalues in [-2, 0].

Nair Abreu, Jorge Alencar, André Ebling Brondani, Leonardo Silva de Lima, Carla Silva Oliveira

Discuss. Math. Graph Theory, 2020

Integer Laplacian eigenvalues of strictly chordal graphs.

Nair Abreu, Cláudia Marcela Justel, Lilian Markenzon

CoRR, 2020

Some new aspects of main eigenvalues of graphs.

Nair Abreu, Domingos M. Cardoso, Francisca Andrea Macedo França, Cybele T. M. Vinagre

Comput. Appl. Math., 2020

2019

Block-indifference graphs: Characterization, structural and spectral properties.

Nair Maria Maia de Abreu, Cláudia Marcela Justel, Lilian Markenzon, Carla Silva Oliveira, Christina Fraga Esteves Maciel Waga

Discret. Appl. Math., 2019

Skeleton matching polytope: Realization and isomorphism.

Nair Abreu, Liliana Costa, Carlos Nascimento, Laura Patuzzi

Discret. Appl. Math., 2019

Integer Laplacian Eigenvalues of Chordal Graphs.

Nair Maria Maia de Abreu, Cláudia Marcela Justel, Lilian Markenzon

CoRR, 2019

2018

Vulnerability of Subclasses of Chordal Graphs.

Nair Maria Maia de Abreu, Lilian Markenzon

Electron. Notes Discret. Math., 2018

2017

Spectra and Laplacian spectra of arbitrary powers of lexicographic products of graphs.

Nair Abreu, Domingos M. Cardoso, Paula Carvalho, Cybele T. M. Vinagre

Discret. Math., 2017

2016

A note on the sum of the largest signless Laplacian eigenvalues.

Bruno D. Amaro, Leonardo Silva de Lima, Carla Silva Oliveira, Carlile Lavor, Nair Abreu

Electron. Notes Discret. Math., 2016

2013

Simultaneously integral graphs on three associated matrices.

Nair Maria Maia de Abreu, Maria Aguieiras A. de Freitas, Renata R. Del-Vecchio

Proceedings of the 12th Cologne-Twente Workshop on Graphs and Combinatorial Optimization, 2013

2010

Bounds on the index of the signless Laplacian of a graph.

Carla Silva Oliveira, Leonardo Silva de Lima, Nair Maria Maia de Abreu, Pierre Hansen

Discret. Appl. Math., 2010

2009

Maximizing the algebraic connectivity for a subclass of caterpillars.

Oscar Rojo, Luis Medina, Nair Abreu, Cláudia Marcela Justel

Electron. Notes Discret. Math., 2009

On Q-spectral integral variation.

Maria Aguieiras A. de Freitas, Renata R. Del-Vecchio, Nair Maria Maia de Abreu, Steve Kirkland

Electron. Notes Discret. Math., 2009

Some Infinite Families of Q-Integral Graphs.

Maria Aguieiras A. de Freitas, Nair Maria Maia de Abreu, Renata R. Del-Vecchio

Proceedings of the 8th Cologne-Twente Workshop on Graphs and Combinatorial Optimization, 2009

2008

Constructing pairs of equienergetic and non-cospectral graphs.

Andréa S. Bonifácio, Cybele T. M. Vinagre, Nair Maria Maia de Abreu

Appl. Math. Lett., 2008

2007

A survey for the quadratic assignment problem.

Eliane Maria Loiola, Nair Maria Maia de Abreu, Paulo Oswaldo Boaventura Netto, Peter Hahn, Tania Maia Querido

Eur. J. Oper. Res., 2007

Bounds on the index of the Signless Laplacian of a graph involving the average degree of neighbors of a vertex.

Nair Maria Maia de Abreu, Pierre Hansen, Carla Silva Oliveira, Leonardo Silva de Lima

Proceedings of the Sixth Cologne Twente Workshop on Graphs and Combinatorial Optimization, 2007

2005

Parameters of connectivity in (a, b)-linear graphs.

Carla Silva Oliveira, Nair Maria Maia de Abreu, Ademir Fernando Pazoto

Electron. Notes Discret. Math., 2005

2002

The Fifth and Sixth Coefficients of the Characteristic Polynomial of a Graph.

Patricia Erthal de Moraes, Nair Maria Maia de Abreu, Samuel Jurkiewicz

Electron. Notes Discret. Math., 2002

Classes of quadratic assignment problem instances: isomorphism and difficulty measure using a statistical approach.

Nair Maria Maia de Abreu, Paulo Oswaldo Boaventura Netto, Tania Maia Querido, Elizabeth Ferreira Gouvea

Discret. Appl. Math., 2002