Publications
The pseudoidentity problem and reducibility for completely regular semigroups. Bull. Austral. Math. Soc.. 2001;63:407-433.Edit
Pseudo-symmetric numerical semigroups with three generators. J. Algebra. 2005;291:46-54.Edit
On Pseudovarieties of Forest Algebras. International Journal of Foundations of Computer Science.Edit
On pseudovarieties, varieties of languages, filters of congruences, pseudoidentities and related topics. Algebra Universalis. 1990;27:333-350.Edit
The pseudovariety $\bf J$ is hyperdecidable. RAIRO Inform. Théor. Appl.. 1997;31:457-482.Edit
Pseudovariety joins involving $\scr J$-trivial semigroups. Internat. J. Algebra Comput.. 1999;9:99-112.Edit
The pseudovariety of semigroups of triangular matrices over a finite field. Theor. Inform. Appl.. 2005;39:31-48.Edit
Public deficits and economic growth. Economic Modelling. 2009;26:1101-1109.Edit
Pré-Cálculo multimédia. 2015.
Probabilidade e Estatística: Teoria e Prática com Excel Plural Editores (Grupo Porto Editora) 2014.Edit
Proceedings of the internacional conference Turning Data into Knowledge: New Opportunities for Statistics Education Instituto de Educação da Universidade de Lisboa 2015.Edit
A Parallel Code for Integral Equations on a Cluster of Computers. In: Constanda C, Largillier A., Ahues M, editors. Integral Methods in Science and Engineering: Analytic and Numerical Techniques. Birkhäuser Boston; 2004. 2. p. 261-266p. Edit
Parallel Eigensolvers for a Discretized Radiative Transfer Problem. In: Palma JMLaginha, Amestoy PR, Daydé M, Mattoso M, Lopes JCorreia, editors. High Performance Computing for Computational Science - VECPAR 2008: 8th International Conference, Toulouse, France, June 24-27, 2008. Revised Selected Papers. Vol 5336. Springer Berlin Heidelberg; 2008. 3. p. 336-348p. (Lecture Notes in Computer Science; vol 5336).Edit
A Parallel Implementation of the Atkinson Algorithm for Solving a Fredholm Equation. In: Palma JMLM, A. Sousa A, Dongarra J, Hernández V, editors. High Performance Computing for Computational Science –- VECPAR 2002: 5th International Conference Porto, Portugal, June 26–28, 2002 Selected Papers and Invited Talks. Vol 2565. Springer Berlin Heidelberg; 2003. 3. p. 368-376p. (Lecture Notes in Computer Science; vol 2565).Edit
A Parallel Implementation of the Jacobi-Davidson Eigensolver for Unsymmetric Matrices. In: Palma JMLaginha, Daydé M, Marques O, Lopes JCorreia, editors. High Performance Computing for Computational Science – VECPAR 2010: 9th International conference, Berkeley, CA, USA, June 22-25, 2010, Revised Selected Papers. Vol 6449. Springer Berlin Heidelberg; 2011. 3. p. 380-393p. (Lecture Notes in Computer Science; vol 6449).Edit
Parallelization of an implicit algorithm for fluid flow problems. In: Topping B.HV, editor. Parallel and Distributed Processing for Computational Mechanics: Systems and Tools. Saxe-Coburg Publications, Stirlingshire, UK; 1999. 3. p. 300-314p. Edit
A parametric family of subalgebras of the Weyl algebra II. Irreducible modules. In: Recent developments in algebraic and combinatorial aspects of representation theory. Vol 602. Amer. Math. Soc., Providence, RI; 2013. 7. p. 73-98p. (Contemp. Math.; vol 602).Edit
Performance Evaluation of a Parallel Algorithm for a Radiative Transfer Problem. In: Dongarra J, Madsen K, Waśniewski J, editors. Applied Parallel Computing. State of the Art in Scientific Computing: 7th International Workshop, PARA 2004, Lyngby, Denmark, June 20-23, 2004. Revised Selected Papers. Vol 3732. Springer Berlin Heidelberg; 2006. 8. p. 864-871p. (Lecture Notes in Computer Science; vol 3732).Edit
Preconditioners for nonsymmetric linear systems in domain decomposition applied to a coupled discretization of Navier-Stokes equations. In: Palma JMLM, Dongarra J, editors. Vector and Parallel Processing –- VECPAR'96: Second International Conference on Vector and Parallel Processing –- Systems and Application Porto, Portugal, September 25–27, 1996 Selected Papers. Vol 1215. Springer Berlin Heidelberg; 1997. 2. p. 295-312p. (Lecture Notes in Computer Science; vol 1215).Edit
Presentations of finitely generated cancellative monoids and natural solutions of linear systems of equations. In: Fifth Conference on Discrete Mathematics and Computer Science (Spanish). Vol 23. Univ. Valladolid, Secr. Publ. Intercamb. Ed., Valladolid; 2006. 2. p. 217-224p. (Ciencias (Valladolid); vol 23).Edit
On a problem of Brzozowski and Fich. In: Semigroups and applications (St. Andrews, 1997). World Sci. Publ., River Edge, NJ; 1998. 1. p. 1-17p. Edit
Profinite semigroups and applications. In: Structural theory of automata, semigroups, and universal algebra. Vol 207. Springer, Dordrecht; 2005. 1. p. 1-45p. (NATO Sci. Ser. II Math. Phys. Chem.; vol 207).Edit
Projected wallpaper patterns. In: Real and complex singularities. Birkhäuser, Basel; 2007. 2. p. 209-217p. (Trends Math.).Edit
On pseudovarieties of monoids. In: Semigroups, theory and applications (Oberwolfach, 1986). Vol 1320. Springer, Berlin; 1988. 1. p. 11-17p. (Lecture Notes in Math.; vol 1320).Edit