Publications
Errors and grids for projected weakly singular integral equations. International Journal of Pure and Applied Mathematics . 2013;89:203-213.Edit
Tameness of some locally trivial pseudovarieties. Comm. Algebra. 2003;31:61-77.Edit
Hyperdecidability of pseudovarieties of orthogroups. Glasg. Math. J.. 2001;43:67-83.Edit
[2009-39] New decidable upper bound of the second level in the Straubing-Thérien concatenation hierarchy .Edit
On direct product decompositions of finite $\scr J$-trivial semigroups. Internat. J. Algebra Comput.. 1991;1:329-337.Edit
A counterexample to a conjecture concerning concatenation hierarchies. Inform. Process. Lett.. 2009;110:4-7.Edit
Hyperdecidable pseudovarieties and the calculation of semidirect products. Internat. J. Algebra Comput.. 1999;9:241-261.Edit
[2016-26] Equidivisible pseudovarieties of semigroups .Edit
Semidirectly closed pseudovarieties of locally trivial semigroups. Semigroup Forum. 1990;40:315-323.Edit
ARFIMA-GARCH Modeling of HRV: Clinical Application in Acute Brain Injury. In: Complexity and Nonlinearity in Cardiovascular Signals. Cham: Springer International Publishing; 2017. 4. p. 451-468p. Edit
Complete reducibility of systems of equations with respect to $\ssf R$. Port. Math. (N.S.). 2007;64:445-508.Edit
Minimal nonpermutative pseudovarieties of semigroups. I, II. Pacific J. Math.. 1986;121:257-270, 271-279.Edit
On fixed points of the lower set operator. Int. J. Algebra Comput.. 2015;25(1-2):259-292.Edit
A syntactical proof of locality of DA. Internat. J. Algebra Comput.. 1996;6:165-177.Edit
Semigrupos finitos e álgebra universal Universidade de São Paulo, Instituto de Matemática e Estatí stica, São Paulo 1991.Edit
Semisimple synchronizing automata and the Wedderburn-Artin theory. Internat. J. Foundat. Comput. Sci.. 2016;27(2):127-145.Edit
Some pseudovariety joins involving the pseudovariety of finite groups. Semigroup Forum. 1988;37:53-57.Edit
The equational theory of ω-terms for finite $\scr R$-trivial semigroups. In: Semigroups and languages. World Sci. Publ., River Edge, NJ; 2004. 1. p. 1-22p. Edit
The ω-inequality problem for concatenation hierarchies of star-free languages. Forum Mathematicum. 2018;30:663-679.Edit
Fetal QRS detection and heart rate estimation: A wavelet-based approach. Physiological Measurement. 2014;35:1723-1735.Edit