Publications
Equidivisible pseudovarieties of semigroups. Publicationes Mathematicae. 2017;90(3-4):435-453.Edit
Multilead ECG Delineation Using Spatially Projected Leads From Wavelet Transform Loops. {IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING}. 2009;{56}:{1996-2005}.Edit
A note on the finite basis and finite rank properties for pseudovarieties of semigroups. Semigroup Forum. 2018;97:177-180.Edit
On finite simple semigroups. Proc. Edinburgh Math. Soc. (2). 1991;34:205-215.Edit
Some algorithms on the star operation applied to finite languages. Semigroup Forum. 1984;28:187-197.Edit
Infinite-vertex free profinite semigroupoids and symbolic dynamics. J. Pure Appl. Algebra. 2009;213:605-631.Edit
Forecasting Asthma Hospital Admissions from Remotely Sensed Environmental Data. In: Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,. INSTICC; 2017. 1. p. 124-130p. Edit
Projection methods based on grids for weakly singular integral equations. Applied Numerical Mathematics. 2017;Volume 114:47-54.Edit
A note on pseudovarieties of completely regular semigroups. Bulletin of the Australian Mathematical Society. 2015;92(2):233-237.Edit
On hyperdecidable pseudovarieties of simple semigroups. Internat. J. Algebra Comput.. 2000;10:261-284.Edit
A wavelet-based method for assessing fetal cardiac rhythms from abdominal ECGs. In: Computing in Cardiology Conference (CinC), 2013. Spain, Zaragoza: IEEE; 2013. 2. p. 289-292p. Edit
The join of the pseudovarieties of $\scr R$-trivial and $\scr L$-trivial monoids. J. Pure Appl. Algebra. 1989;60:129-137.Edit
Subword complexity of profinite words and subgroups of free profinite semigroups. Internat. J. Algebra Comput.. 2006;16:221-258.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
The mathematician Hugo Ribeiro. Portugal. Math.. 1995;52:1-14.Edit
Semidirect products with the pseudovariety of all finite groups. In: Words, languages & combinatorics, III (Kyoto, 2000). World Sci. Publ., River Edge, NJ; 2003. 1. p. 1-21p. Edit
[2013-10] On the topological semigroup of equational classes of finite functions under composition .Edit
Counting factors in words, semidirect products and power semigroups. In: Words, languages and combinatorics (Kyoto, 1990). World Sci. Publ., River Edge, NJ; 1992. 1. p. 1-15p. Edit
Some order properties of the lattice of varieties of commutative semigroups. Canad. J. Math.. 1986;38:19-47.Edit
A sequence of weakly monotonic automata with increasing level. Int. J. Algebra. 2013;7:91-100.Edit
Semidirect product with an order-computable pseudovariety and tameness. Semigroup Forum. 2010;81:26-50.Edit
Globals of pseudovarieties of commutative semigroups: the finite basis problem, decidability and gaps. Proc. Edinb. Math. Soc. (2). 2001;44:27-47.Edit
Reducibility of pointlike problems. Semigroup Forum. 2017;94(2):325-335.Edit
Commutative positive varieties of languages. Acta Cybernetica. 2017;23(1):91-111.Edit
An elementary proof that finite groups are projectively torsion-free. Portugal. Math.. 1990;47:437-444.Edit