Publications
Free profinite semigroups over semidirect products. Izv. Vyssh. Uchebn. Zaved. Mat.. 1995:3-31.Edit
New decidable upper bound of the second level in the Straubing-Thérien concatenation hierarchy of star-free languages. Discrete Math. Theor. Comput. Sci.. 2010;12:41-58.Edit
Sur certains systèmes d'équations avec contraintes dans un groupe libre–-addenda. Port. Math. (N.S.). 2001;58:379-387.Edit
On fixed points of the lower set operator. Int. J. Algebra Comput.. 2015;25(1-2):259-292.Edit
Complete κ-reducibility of pseudovarieties of the form DRH. International Journal of Algebra and Computation. 2017;27(2):189-235.Edit
On the power semigroup of a finite semigroup. Portugal. Math.. 1992;49:295-331.Edit
The equation $\bf PX=\bf PJ$. In: Proceedings of the International Symposium on the Semigroup Theory and its Related Fields (Kyoto, 1990). Shimane Univ., Matsue; 1990. 1. p. 1-11p. Edit
Decidability and tameness in the theory of finite semigroups. Bull. Iranian Math. Soc.. 2008;34:1-22.Edit
Semigrupos finitos e álgebra universal Universidade de São Paulo, Instituto de Matemática e Estatí stica, São Paulo 1991.Edit
On the decidability of iterated semidirect products with applications to complexity. Proc. London Math. Soc. (3). 2000;80:50-74.Edit
On the topological semigroup of equational classes of finite functions under composition. J. of Mult.-Valued Logic & Soft Computing. 2017;28(1):5-28.Edit
On power varieties of semigroups. J. Algebra. 1989;120:1-17.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
Tameness of pseudovariety joins involving R. Monatsh. Math.. 2005;146:89-111.Edit
Fetal QRS detection and heart rate estimation: A wavelet-based approach. Physiological Measurement. 2014;35:1723-1735.Edit
Some algorithms on the star operation applied to finite languages. Semigroup Forum. 1984;28:187-197.Edit
Semisimple synchronizing automata and the Wedderburn-Artin theory. In: Developments in Language Theory, 2014. Vol Developments in Language Theory. Russia, Ekaterinburg: Springer; 2014. 4. p. 49-60p. Edit