Members > Faculty Members

Mário Branco

Institutional Address

Faculdade de Ciências da Universidade de Lisboa
Av. Prof. Gama Pinto, 2
1649-003 LISBOA


Phone: +351 217904721 | Fax: +351 217954288 | Email: mjbranco@fc.ul.pt

Position

Assistant Professor, Faculdade de Ciências, Universidade de Lisboa

Area

Algebra

Principal Area

Semigroups, Automata and Formal Languages

Other Area

Categories, Logic and Ring Theory

Qualifications


Publications

Papers in International Journals

Branco, Mário J. J.; Gomes, Gracinda M. S. (2016) Takahasi semigroups. Forum Mathematicum.
Branco, Mário J. J.; Gomes, Gracinda M. S. (2015) Ehresmann monoids.  J. Algebra : 443, 349–382.
Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria (2011) Left adequate and left Ehresmann monoids . International Journal of Algebra and Computation: 21(7), 1259-1284.
Branco, Mário J. J.; Gould, Victoria; Gomes, Gracinda M. S. (2010) Extensions and covers for semigroups whose idempotents form a left regular band. Semigroup Forum: 81, 51-70.
Branco, Mário J. J.; Gomes, Gracinda M. S. (2009) The generalized Szendrei expansion of an R-unipotent semigroup. Acta Mathematica Hungarica: 123(1-2), 11-26.
Branco, Mário J. J.; Pin, J.-E. (2009) Equations defining the polynomial closure of a lattice of regular languages. Lecture Notes in Computer Science: 5556, 115-126.
Branco, Mário J. J. (2007) Deterministic concatenation product of languages recognized by finite idempotent monoids. Semigroup Forum: 74, n. 3, 379-409.
Branco, Mário J. J. (2006) Two algebraic approaches to variants of the concatenation product. Theoret. Comput. Sci.: 369, 406-426.
Araújo, Isabel M.; Branco, Mário J. J.; Fernandes, Vítor Hugo; Gomes, Gracinda M. S.; Ruskuc, N. (2001) On generators and relations for unions of semigroups. Semigroup Forum: 63 (1), 49-62.
Branco, Mário J. J. (1997) The Kernel Category and Variants of the Concatenation Product. Internat. J. Algebra Comput.: 7, 487-509.
Branco, Mário J. J. (1994) On the Pin-Thérien Expansion of Idempotent Monoids. Semigroup Forum: 49, 329-334.

Papers or Chapters in Edited Books

Branco, Mário J. J. (2002) Varieties of languages. Proceedings of the Thematic Term on Semigroups, Algorithms, Automata and Languages (Coimbra, Portugal, 2001), G.M.S. Gomes et al. (Eds), World Scientific, Singapore, 91-132.

Edition of Books

André, Jorge M.; Branco, Mário J. J.; Fernandes, Vítor Hugo; Fountain, John; Gomes, Gracinda M. S.; Meakin, John (2007) Semigroups and Formal Languages, (Proceedings - International Conference on Semigroups and Languages in honour of the 65th birthday of D.B. McAlister), Lisboa, July 2005. World Scientific.
Araújo, Isabel M.; Branco, Mário J. J.; Fernandes, Vítor Hugo; Gomes, Gracinda M. S. (2004) Proceedings of the Workshop on Semigroups and Languages (Lisbon 2002). World Scientific.

Seminars

Expansions for the concatenation product (2007-07-12) The second international congress in algebras and combinatorics, dedicated to the 70 birthday of Leonid A. Bokut , Xi'an University of Architecture and Technology, Xi'an, China

Conferences

Groups and Semigroups: Interactions and Computations Faculdade de Ciências da Universidade de Lisboa 
Scientific meeting of the ANR french project FREC - Frontiers of recognizability Hotel Les Grenettes, Ile de Ré, France  (Invited Speaker)
International Conference on Semigroups and related topics Porto, Portugal, 6-11/07/2009 
Workshop on Algebra  CAUL, Lisboa, Portugal, 26/06/2009 
Workshop "Groups, Semigroups and Applications" CAUL, Lisbon, Portugal, 24/04/2009 
School on Algebraic Theory of Automata CAUL, Lisbon, Portugal, 01-12/09/2008  (Organizing Committee)
The second international congress in algebras and combinatorics, dedicated to the 70 birthday of Leonid A. Bokut Beijing, China, 6-11/07/2007 and Xi'an, China, 12-15/07/2007  (Contributed Talk)
AutoMathA 2007 - Automata: from Mathematics to Applications Hotel La Torre, Mondello, Palermo, Italy, 18-22/06/2007 
Workshop on Semigroups and Applications Centro de Álgebra da Universidade de Lisboa, Lisboa, Portugal, 27/04/2007 
Fountainfest "Semigroups, categories and automata", a conference celebrating John Fountain's 65th birthday and his mathematical achievements University of York, UK, 12-14/10/2006 
Workshop on Algebra CAUL, Lisbon, portugal, 16/02/2006 
Workshop on Semigroups and Automata (Satellite Workshop to ICALP'05) Instituto Superior Técnico, Lisbon, Portugal, 16/07/2005  (Scientific Committee)
International Conference on Semigroups and Languages, in honour of the 65th birthday of Donald B. McAlister CAUL, Lisbon, Portugal, 12-15/07/2005  (Organizing Committee)
Workshop on "Weighted Automata: Theory and Applications" Dresden Technical University, Dresden, Germany, 01-05/06/2004 
4th International Conference on Words Turku, Finland, 10-13/09/2003 
International Meeting on Semigroup Theory and Related Topics University of Minho, Braga, Portugal, 25-28/06/2003 
International Workshop on Semigroups and Languages CAUL, Lisbon, Portugal, 27-29/11/2002  (Organizing Committee)
International Conference on Semigroups and Groups in Honor of the 65th Birthday of John Rhodes University of Oporto, Portugal, 26-29/06/2002