Publications
On fixed points of the lower set operator. Int. J. Algebra Comput.. 2015;25(1-2):259-292.Edit
Power exponents of aperiodic pseudovarieties. Semigroup Forum. 1999;59:18-32.Edit
Semigrupos finitos e álgebra universal Universidade de São Paulo, Instituto de Matemática e Estatí stica, São Paulo 1991.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
The pseudovariety of semigroups of triangular matrices over a finite field. Theor. Inform. Appl.. 2005;39:31-48.Edit
Automatic multilead VCG based approach for QT interval measurement. In: {Computers in Cardiology}. Vol {33}.; 2006. {. {p. 369-372p. }.Edit
Some order properties of the lattice of varieties of commutative semigroups. Canad. J. Math.. 1986;38:19-47.Edit
Free profinite $\scr R$-trivial monoids. Internat. J. Algebra Comput.. 1997;7:625-671.Edit
Closures of regular languages for profinite topologies. Semigroup Forum. 2014;89:20-40.Edit
A note on the finite basis and finite rank properties for pseudovarieties of semigroups. Semigroup Forum. 2018;97:177-180.Edit
Semisimple Synchronizing Automata and the Wedderburn-Artin Theory. In: Development in Language Theory, DLT 2014. Vol LNCS, 8633.; 2014. 4. p. 49-60p. Edit
Finite semigroups: an introduction to a unified theory of pseudovarieties. In: Semigroups, algorithms, automata and languages (Coimbra, 2001). World Sci. Publ., River Edge, NJ; 2002. 3. p. 3-64p. Edit
Fetal QRS detection and heart rate estimation: A wavelet-based approach. Physiological Measurement. 2014;35:1723-1735.Edit
Implicit operations and Knast's theorem. In: Semigroups (Luino, 1992). World Sci. Publ., River Edge, NJ; 1993. 1. p. 1-16p. Edit
Equidivisible pseudovarieties of semigroups. Publicationes Mathematicae. 2017;90(3-4):435-453.Edit
On iterated semidirect products of finite semilattices. J. Algebra. 1991;142:239-254.Edit
Rational codes and free profinite monoids. J. Lond. Math. Soc. (2). 2009;79:465-477.Edit
On the hyperdecidability of semidirect products of pseudovarieties. Comm. Algebra. 1998;26:4065-4077.Edit
Tameness of pseudovarieties of semigroups. S\=urikaisekikenky\=usho Kōky\=uroku. 2000:8-16.Edit
[2009-39] New decidable upper bound of the second level in the Straubing-Thérien concatenation hierarchy .Edit
Residually finite congruences and quasi-regular subsets in uniform algebras. Portugal. Math.. 1989;46:313-328.Edit
An automata-theoretic approach to the word problem for ω-terms over $\ssfR$. Theoret. Comput. Sci.. 2007;370:131-169.Edit