pt
|
en
Home
Áreas de Investigação
Álgebra e Computação
Análise Numérica e Aplicações
Modelação Matemática em Biomedicina
Estatística e Processos Estocásticos
Membros
Publicações
Eventos
Applied and Numerical Analysis Seminar
Probability and Statistics Seminar
Seminários de Álgebra
CEMAT's Open Seminar
Encontros Científicos
Cursos
Projetos
Contactos
Publicações
Pesquisa
(Ano)
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1988
1987
1986
1985
1983
1978
1977
1973
1972
1962
1960
1959
(Área)
Álgebra e Computação
Análise Aplicada e Numérica
Estatística e Processos Estocásticos
Modelação Matemática em Biomedicina
(Tipo Publicação)
Artigos em Revistas Internacionais
Livros
Artigos ou Capítulos em Livros Editados
Comunicações em Actas de Conferência
Teses
Edição de Livros
Artigos em Revistas Científicas Nacionais
(Tipo Membro)
Membros doutorados
Colaboradores
Estudantes de Doutoramento
Antigo Membro
Excluir submetidos
Artigos em Revistas Internacionais
Branco, Mário J. J.
;
Gomes, Gracinda M. S.
; Silva, Pedro V. (2019)
On the semigroup rank of a group
Semigroup Forum: 99, 568-578.
Araújo, João
;
Gomes, Gracinda M. S.
;
Bentz, Wolfram
(2018)
Congruences on direct products of transformation and matrix monoids
Semigroup Forum: 97, 384-416.
Araújo, João
;
Kinyon, M.
(2018)
Decidability and Independence of Conjugacy Problems in Finitely Presented Monoids
Theoretical Computer Science.
Branco, Mário J. J.
;
Gomes, Gracinda M. S.
; Gould, Victoria; Wang, Yanhui (2018)
Ehresmann monoids: adequacy and expansions
Journal of Algebra: 513, 344-367.
Soares, Filipa
; Silva, Pedro V.; Volkov, Mikhail V. (2018)
Local finiteness for Green's relations in semigroup varieties
Communications in Algebra: 40 (10), 4625-4653.
Araújo, João
;
Bentz, Wolfram
;
Cameron, P. J.
(2018)
Orbits of Primitive k-Homogenous Groups on (n-k)-Partitions with Applications to Semigroups
Transactions of the American Mathematical Society.
Araújo, João
;
Cameron, P. J.
; Hulpke, A.; Lopes,P. (2017)
Imprimitive Permutations in Primitive Groups
Journal of Algebra: 486, 396-416.
Branco, Mário J. J.
;
Gomes, Gracinda M. S.
; Silva, Pedro V. (2017)
Takahasi semigroups
Forum Mathematicum: 29(5), 1145-1161.
Soares, Filipa
; Silva, Pedro V. (2016)
Howson's Property for Semidirect Products of Semilattices by Groups
Communications in Algebra: 44, 2482-2494.
Araújo, João
;
Bentz, Wolfram
;
Cameron, P. J.
; Gordon Royle; Artur Schaefer (2016)
Primitive Groups, Graph Endomorphisms and Synchronization
Proceedings of the London Mathematical Society: 113, 829--867.
Cameron, P. J.
; Sebastian M. Cioaba (2015)
A graph partition problem
American Mathematical Monthly: 122, 972-983.
Araújo, João
;
Kinyon, M.
(2015)
A natural characterization of semilattices of rectangular bands and groups of exponent two
Semigroup Forum: 91, 295-298.
Drapal, A.;
Kinyon, M.
(2015)
Buchsteiner loops: associators and constructions
Algebra and its Applications: 14(4), 1550050.
Kinyon, M.
; J. Leech; J. Pita Costa (2015)
Distributivity in skew lattices
Semigroup Forum: 91, 378-400.
Branco, Mário J. J.
;
Gomes, Gracinda M. S.
; Gould, Victoria (2015)
Ehresmann monoids
J. Algebra: 443, 349–382.
Kinyon, M.
; I. Wanless (2015)
Loops with exponent 3 in all isotopes
International Journal of Algebra and Computation: 25(7), 1159-1177.
László Babai;
Cameron, P. J.
(2015)
Most primitive groups are full automorphism groups of edge-transitive hypergraphs
Journal of Algebra: 421, 512--523.
Cameron, P. J.
; Pablo Spiga (2015)
Most switching classes with primitive automorphism groups contain graphs with trivial groups
Australasian J. Combinatorics: 62, 76-90.
Gomes, Gracinda M. S.
;
Santa-Clara, Catarina
;
Soares, Filipa
(2015)
The semigroup ring of a restriction semigroup with an inverse skeleton
Semigroup Forum: 90 (2015), no. 2, 449–474.
Araújo, João
;
Kinyon, M.
(2014)
Inverse semigroups with idempotent-fixing automorphisms
Semigroup Forum: 89(2), 469-474.
Gomes, Gracinda M. S.
; Ruskuc, Nik (2014)
John Macintosh Howie: Work and Legacy
Semigroup Forum: 89(1), 2-19.
Bentz, Wolfram
;
Sequeira, Luís
(2014)
Taylor's modularity conjecture holds for linear idempotent varieties
Algebra Universalis: 71(2), 101-107.
Araújo, João
;
Kinyon, M.
; Malheiro, António (2013)
A characterization of adequate semigroups by forbidden subsemigroups
Proceedings of the Royal Society of Edinburgh Series A: 143(6), 1115-1122.
Araújo, João
;
Kinyon, M.
(2012)
Axioms for Unary Semigroups Via Division Operations
Communications in Algebra: 40(2), 719-737.
Jedlicka, P.;
Kinyon, M.
; Vojtechovsky, P. (2012)
Nilpotency in automorphic loops of prime power order
Journal of Algebra: 360(1), 64-76.
Araújo, João
;
Kinyon, M.
(2012)
On a Problem of M. Kambites Regarding Abundant Semigroups
Communications in Algebra: 40(12), 4439–4447.
Araújo, João
;
Kinyon, M.
(2011)
An Elegant 3-Basis for Inverse Semigroups
Semigroup Forum: 82(2), 319-323.
Araújo, João
;
Kinyon, M.
(2011)
Independent axiom systems for nearlattices
Czechoslovak Mathematical Journal: 61(4), 975-992.
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.
Gomes, Gracinda M. S.
; Gould, Victoria (2011)
Left adequate and left Ehresmann monoids II
Journal of Algebra: 348(1), 171-195.
Araújo, João
;
Kinyon, M.
; Konieczny, J. (2011)
Minimal Paths in the Commuting Graphs of Semigroups
European Journal of Combinatorics: 32, 178-197.
Fernandes, Vítor Hugo;
Gomes, Gracinda M. S.
; Jesus, Manuel M. (2011)
The cardinal and the idempotent number of various monoids of transformations on a finite chain
Bulletin of the Malaysian Mathematical Sciences Society: 34(1), 79–85.
Jedlicka, P.;
Kinyon, M.
; Vojtechovsky, P. (2011)
The structure of commutative automorphic loops
Transactions of the American Mathematical Society: 363(1), 365-384.
McAlister, D. B.;
Soares, Filipa
(2011)
Tiling semigroups of n-dimensional hypercubic tilings
Communications in Algebra: 39(6), 2002-2023.
Iglésias, Laura;
Santa-Clara, Catarina
; Silva, Fernando C. (2011)
Unified Min-Max and Interlacing Theorems for Linear Operators
Linear and Multilinear Algebra: 59(6), 651-669.
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.
Fernandes, Vítor Hugo;
Gomes, Gracinda M. S.
; Jesus, Manuel M. (2009)
Congruences on monoids of transformations preserving the orientation on a finite chain
Journal of Algebra: 321(3), 743–757.
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.
Mermut, Engin;
Santa-Clara, Catarina
; Smith, Patrick F. (2009)
Injectivity Relative to Closed Submodules
Journal of Algebra: 321(2), 548-557.
Fountain, John;
Gomes, Gracinda M. S.
; Gould, Victoria (2009)
Membership of AvG for classes of finite weakly abundant semigroups
Periodica Mathematica Hungarica: 59(1), 9-36.
Soares, Filipa
; McAlister, D. B. (2009)
One-dimensional tiling semigroups and factorial languages
Communications in Algebra: 37(1), 276-295.
Fountain, John;
Gomes, Gracinda M. S.
; Gould, Victoria (2009)
The free ample monoid
International Journal of Algebra and Computation: 19(4), 527-554.
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.
Gomes, Gracinda M. S.
; Gould, Victoria (2008)
Fundamental semigroups having a band of idempotents
Semigroup Forum: 77, 279-299.
Kinyon, M.
; Phillips, J. D.; Vojtechovsky, P. (2008)
When is the commutant of a Bol loop a subloop?
Transactions of the American Mathematical Society: 360(5), 2393-2408.
Gomes, Gracinda M. S.
; Maria B. Szendrei (2007)
Almost factorizable weakly ample semigroups
Communications in Algebra: 35 (11), 3503-3523.
Branco, Mário J. J.
(2007)
Deterministic concatenation product of languages recognized by finite idempotent monoids
Semigroup Forum: 74, n. 3, 379-409.
Gomes, Gracinda M. S.
; Szendrei, Maria B. (2007)
Even covers of left ample semigroups
Semigroup Forum: 74(2), 293-305.
Fountain, John B.;
Gomes, Gracinda M. S.
(2006)
Finite abundant semigroups in which the idempotents form a subsemigroup
Journal of Algebra: 295, 303-313.
Gomes, Gracinda M. S.
; Pin, J.-E.; Sezinando, Helena (2006)
Presentations of the Schützenberger product of n groups
Communications in Algebra: 34 (4), 1213-1235.
1
2
3
...
»
CEMAT
- Center for Computational and Stochastic Mathematics
Instituto Superior Têcnico
Faculdade de Ciências
Universidade de Lisboa