António Leal Duarte

发表

Converse to the Parter-Wiener theorem: The case of non-trees

Charles R. Johnson, António Leal Duarte, 2006, Discret. Math..

Changes in vertex status and the fundamental decomposition of a tree relative to a multiple (parter) eigenvalue

Charles R. Johnson, Paul R. McMichael, António Leal Duarte, 2017, Discret. Appl. Math..

The maximum multiplicity of an eigenvalue in a matrix whose graph is a tree

Charles R. Johnson, António Leal Duarte, 1999 .

The number of distinct eigenvalues for which an index decreases multiplicity

Charles R. Johnson, Carlos M. Saiago, António Leal Duarte, 2017 .

The structure of matrices with a maximum multiplicity eigenvalue

Charles R. Johnson, Carlos M. Saiago, António Leal Duarte, 2008 .

Inverse eigenvalue problems and lists of multiplicities of eigenvalues for matrices whose graph is a tree: the case of generalized stars and double generalized stars

Charles R. Johnson, Carlos M. Saiago, António Leal Duarte, 2003 .

On the relative position of multiple eigenvalues in the spectrum of an Hermitian matrix with a given graph

Charles R. Johnson, Brian D. Sutton, Carlos M. Saiago, 2003 .

Construction of acyclic matrices from spectral data

António Leal Duarte, 1989 .

On the possible multiplicities of the eigenvalues of a Hermitian matrix whose graph is a tree

Charles R. Johnson, António Leal Duarte, 2002 .

Contemporary Mathematics Eigenvalues , Multiplicities and Graphs

Charles R. Johnson, Carlos M. Saiago, António Leal Duarte, 2006 .

On Fiedler's characterization of tridiagonal matrices over arbitrary fields

António Leal Duarte, Américo Bento, 2005 .

on replicas of known results

António Leal Duarte, SÁ Eduardomarquesde, 2015 .

The Parter-Wiener Theorem: Refinement and Generalization

Charles R. Johnson, Carlos M. Saiago, Charles R. Johnson, 2003, SIAM J. Matrix Anal. Appl..