CEMAT - Member

Members > PhD Members

Mário Branco

Institutional Address

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

Phone: +351 217500657 | Fax: +351 217500072 | Email: mjbranco@fc.ul.pt

Position

Assistant Professor, Faculdade de Ciências, Universidade de Lisboa

Area

Algebra and Computing

Principal Area

Semigroups, Automata and Formal Languages

Other Area

Categories and Logic

Orcid ID: https://orcid.org/0000-0002-2209-1316

Scopus Author ID: 7004477802

Qualifications

Equivalence to the PhD degree in Mathematics, Faculty of Sciences, University of Lisbon, 1997
PhD in (Theoretical) Computer Science, Laboratoire d'Informatique Théorique et Programmation, University Paris 6 - Pierre et Marie Curie, France, 1997
MSc in Mathematics (Algebra), Faculty of Sciences, University of Lisbon, 1993
BSc in Mathematics, Faculty of Sciences, University of Lisbon, 1989

Papers in International Journals

Branco, Mário J. J.; Gomes, Gracinda M. S.; Pin, Jean-Éric; Soler-Escrivà, Xaro (2020) On formations of monoids . Journal of Pure and Applied Algebra: 224, no. 11, 106401, 24 pages.

Branco, Mário J. J.; Gomes, Gracinda M. S.; Silva, Pedro V. (2019) On the semigroup rank of a group . Semigroup Forum: 99, 568-578.

Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria; Wang, Yanhui (2018) Ehresmann monoids: adequacy and expansions . Journal of Algebra: 513, 344-367.

Branco, Mário J. J.; Pin, Jean-Eric (2018) Inequalities for One-Step Products . Lecture Notes in Computer Science: 11088, 156-168.

Branco, Mário J. J.; Gomes, Gracinda M. S.; Silva, Pedro V. (2017) Takahasi semigroups . Forum Mathematicum: 29(5), 1145-1161.

Branco, Mário J. J.; Gomes, Gracinda M. S.; Gould, Victoria (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.

PhD Theses Supervision

Joana Mendonça F. M. Matos, Sobre expansões de Malcev de semigrupos finitos, PhD in Mathematics, Faculdade de Ciências, Universidade de Lisboa, 2012; co-supervisor: Gracinda M. S. Gomes

MSc Theses Supervision

Maria Suzana F. S. Mendes Gonçalves, Sobre grupóides ordenados e semigrupos inversos, MSc in Mathematics, Faculdade de Ciências, Universidade de Lisboa, 2002
Paulo Alexandre Andrade Vieira, Palavras finitas e infinitas, MSc in Mathematics, Faculdade de Ciências, Universidade de Lisboa, 2004
Eduardo José Caetano Branco, Linguagens reconhecíveis nas variantes de palavras, árvores e florestas: caracterizações e um estudo comparativo, MSc in Mathematics, Faculdade de Ciências, Universidade de Lisboa, 2014

Seminars

Portuguese Workshop on Semigroups (27/06/2019) Departmento de Matemática, Faculdade de Ciências e Tecnologia, Universidade de Coimbra

On the semigroup rank of a group (23/03/2018) Faculdade de Ciências da Universidade de Lisboa

International Conference on Semigroups and Automata (CSA 2016) (20/06/2016) Faculdade de Ciências da Universidade de Lisboa

Expansions for the concatenation product (12/07/2007) 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 (25/07/2011) Faculdade de Ciências da Universidade de Lisboa

Scientific meeting of the ANR french project FREC - Frontiers of recognizability (09/05/2011) Hotel Les Grenettes, Ile de Ré, France (Invited Speaker)

International Conference on Semigroups and related topics (07/2009) Porto, Portugal, 6-11/07/2009

Workshop on Algebra (26/06/2009) CAUL, Lisboa, Portugal, 26/06/2009

Workshop "Groups, Semigroups and Applications" (24/04/2009) CAUL, Lisbon, Portugal, 24/04/2009

School on Algebraic Theory of Automata (09/2008) 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 (07/2007) Beijing, China, 6-11/07/2007 and Xi'an, China, 12-15/07/2007 (Contributed Talk)

AutoMathA 2007 - Automata: from Mathematics to Applications (18/06/2007) Hotel La Torre, Mondello, Palermo, Italy, 18-22/06/2007

Workshop on Semigroups and Applications (27/04/2007) 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 (12/10/2006) University of York, UK, 12-14/10/2006

Workshop on Algebra (16/02/2006) CAUL, Lisbon, portugal, 16/02/2006

Workshop on Semigroups and Automata (Satellite Workshop to ICALP'05) (16/07/2005) 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 (12/07/2005) CAUL, Lisbon, Portugal, 12-15/07/2005 (Organizing Committee)

Workshop on "Weighted Automata: Theory and Applications" (06/2004) Dresden Technical University, Dresden, Germany, 01-05/06/2004

4th International Conference on Words (09/2003) Turku, Finland, 10-13/09/2003

International Meeting on Semigroup Theory and Related Topics (25/06/2003) University of Minho, Braga, Portugal, 25-28/06/2003

International Workshop on Semigroups and Languages (11/2002) CAUL, Lisbon, Portugal, 27-29/11/2002 (Organizing Committee)

International Conference on Semigroups and Groups in Honor of the 65th Birthday of John Rhodes (06/2002) University of Oporto, Portugal, 26-29/06/2002