Publications
Publicações

Publications

N-matrix completion problem

Linear Algebra and Its Applications | 2003

J.R. Torregrosa

A.M. Urbano

DOI

Double warped space-times

Journal of Mathematical Physics | 2003

E.G.L.R. Vaz

J. Carot

DOI

Obtaining the pure radiation metric with one Killing/homothetic vector field using invariant operators

Gravitation and Cosmology; Publicacions de la Universitat de Barcelona | 2003

Survival of hemodialysis patients: Modeling differences in risk of dialysis centers

International Journal for Quality in Health Care | 2003

M. Sá Carvalho

R. Henderson

S. Shimakura

DOI

Elements of rings with equal spectral idempotents

Journal of the Australian Mathematical Society | 2002

J.J. Koliha

DOI

Variational problems with non-constant gradient constraints

Embeddings up to homotopy of two-cones in euclidean space

Transactions of the American Mathematical Society | 2002

P. Lambrechts

D. Stanley

DOI

Fibrewise suspension and Lusternik-Schnirelmann category

Topology | 2002
DOI

Gaps in the Milnor-Moore spectral sequence

Bulletin of the Belgian Mathematical Society - Simon Stevin | 2002
DOI

Preface

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | 2002

G. Barthe

P. Dybjer

J. Saraiva

A neuronal field model for saccade planning in the superior colliculus: Speed-accuracy tradeoff in the double-target paradigm

Neurocomputing | 2002

S. Schneider

DOI

Dynamic field theory of movement preparation

Psychological Review | 2002

G. Schöner

DOI

Dynamic field theory of movement preparation.

Psychological Review | 2002

Gregor Schöner

DOI

Evolving field models for inhibition effects in early vision

Neurocomputing | 2002

C. Igel

W. Von Seelen

D. Jancke

DOI

Some Pseudovariety Joins Involving Locally Trivial Semigroups

Semigroup Forum | 2002

Some pseudovariety joins involving groups and locally trivial semigroups

The pseudovariety generated by all semigroups of orientation-preserving transformations on a finite cycle

INTERNATIONAL JOURNAL OF ALGEBRA AND COMPUTATION | 2002

P.M. Higgins

DOI

Comment on "strength and genericity of singularities in Tolman-Bondi-de Sitter collapse" and a note on central singularities

Physics Letters, Section A: General, Atomic and Solid State Physics | 2002

B.C. Nolan

S.M.C.V Gonçalves

DOI

Cosmic no-hair: Nonlinear asymptotic stability of de Sitter universe

Classical and Quantum Gravity | 2002

M. Bruni

R. Tavakol

DOI

Generalization of the Einstein-Straus model to anisotropic settings

Physical Review D | 2002

R. Tavakol

R. Vera

DOI

Geometry and topology of singularities in spherical dust collapse

Classical and Quantum Gravity | 2002

B.C. Nolan

DOI

Second order perturbations of flat dust FLRW universes with a cosmological constant

International Journal of Modern Physics A | 2002

R. Tavakol

M. Bruni

DOI

An isomorphism between a fragment of sequent calculus and an extension of natural deduction

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | 2002
DOI

Statistical modelling of pollutant concentration in the surface waters of River Ave basin

The completion problem for N-matrices

Juan R. Torregrosa

Some pseudovariety joins involving locally trivial semigroups and groups

DOI

About the von Neumann regularity of triangular block matrices

Linear Algebra and Its Applications | 2001

R. Puystjens

DOI

The Moore-Penrose inverse of von Neumann regular matrices over a ring

Linear Algebra and Its Applications | 2001
DOI

Globals of pseudovarieties of commutative semigroups: The finite basis problem, decidability and gaps

Proceedings of the Edinburgh Mathematical Society | 2001

J. Almeida

Approximating the conformal maps of elongated quadrilaterals by domain decomposition

Constructive Approximation | 2001

N. Papamichael

N.S. Stylianopoulos

DOI

LS-catégorie algébrique et attachement de cellules

Canadian Mathematical Bulletin | 2001
DOI

On the convergence analysis of a multipliers method

L. N. Vicente

An efficient parallel algorithm for the symmetric tridiagonal eigenvalue problem

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | 2001

R. Ralha

Basic analog of fourier series on a q-linear grid

Journal of Approximation Theory | 2001

J. Bustoz

DOI

Erratum:

Journal of Approximation Theory | 2001

J. Bustoz

Erratum: "Basic analog of fourier series on q-linear grid" (Journal of Approximation Theory (2001) vol. 112 (1) (134-157))

Journal of Approximation Theory | 2001

J. Bustoz

DOI

On semidirectly closed pseudovarieties of aperiodic semigroups

Journal of Pure and Applied Algebra | 2001
DOI

The Semidirectly Closed Pseudovariety Generated by Aperiodic Brandt Semigroups

International Journal of Algebra and Computation | 2001
DOI

Optimization of dynamic neural fields [1]

Neurocomputing | 2001

C. Igel

D. Jancke

DOI

Linear operators preserving the numerical range (radius) on triangular matrices

Linear and Multilinear Algebra | 2001

C.-K. Li

P. Šemrl

Graph Products of Monoids

Semigroup Forum | 2001
DOI

On graph products of automatic monoids

RAIRO - Theoretical Informatics and Applications | 2001
DOI

Free profinite locally idempotent and locally commutative semigroups

Journal of Pure and Applied Algebra | 2001
DOI

How modern mathematics came to Portugal

Mathematical Intelligencer | 2001

Non-radial null geodesics in spherical dust collapse

Classical and Quantum Gravity | 2001

B.C. Nolan

DOI

Ranks of submatrices and the off-diagonal indices of a square matrix

Linear Algebra and Its Applications | 2000

E. Marques De Sá

The number of Kronecker indices of square pencils of a special kind

Linear Algebra and Its Applications | 2000

E. Marques De Sá

On finitely based pseudovarieties of the forms V * D and V * D<inf>n</inf><sup>1</sup>

Journal of Pure and Applied Algebra | 2000

J. Almeida