Publications
Some order properties of the lattice of varieties of commutative semigroups. Canad. J. Math.. 1986;38:19-47.Edit
Sur certains systèmes d'équations avec contraintes dans un groupe libre. Portugal. Math.. 1999;56:409-417.Edit
[2004-18] The globals of pseudovarieties of ordered semigroups containing $B_2$ and an application to a proble .Edit
Factoriality and the Pin-Reutenauer procedure. Discrete Math. Theor. Comput. Sci.. 2016;18:Paper No. 1, 23.Edit
A notion of branching rank for semilattices with descending chain condition. Order. 1988;4:397-409.Edit
The globals of pseudovarieties of ordered semigroups containing $B_2$ and an application to a problem proposed by Pin. Theor. Inform. Appl.. 2005;39:1-29.Edit
Idempotent-generated semigroups and pseudovarieties. Proceedings of the Edinburgh Mathematical Society. 2011;54:545-568.Edit
Monoids respecting $n$-chains of intervals. J. Algebra. 1997;187:183-202.Edit
A geometric interpretation of the Schützenberger group of a minimal subshift. Arkiv för Matematik. 2016;54(2):243-275.Edit
On regular implicit operations. Portugal. Math.. 1993;50:35-61.Edit
Iterated periodicity over finite aperiodic semigroups. European J. Combin.. 2014;37:115-149.Edit
Automatic multilead VCG based approach for QT interval measurement. In: {Computers in Cardiology}. Vol {33}.; 2006. {. {p. 369-372p. }.Edit
Some key problems on finite semigroups. Semigroup Forum. 2002;64:159-179.Edit
On finite simple semigroups. Proc. Edinburgh Math. Soc. (2). 1991;34:205-215.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
Infinite-vertex free profinite semigroupoids and symbolic dynamics. J. Pure Appl. Algebra. 2009;213:605-631.Edit
The pro-nilpotent group topology on a free group. Journal of Algebra. 2017;480:332-345.Edit
On hyperdecidable pseudovarieties of simple semigroups. Internat. J. Algebra Comput.. 2000;10:261-284.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
Generalized varieties of commutative and nilpotent semigroups. Semigroup Forum. 1984;30:77-98.Edit