Journal article |
- Gracinda M. S. Gomes; Ana-Catarina C. Monteiro. "Formations of orthodox semigroups". Semigroup Forum (2023): http://dx.doi.org/10.1007/s00233-023-10390-x.
10.1007/s00233-023-10390-x
- Gracinda M. S. Gomes; Isabel J. Nobre. "Formations of inverse semigroups". Semigroup Forum (2022): http://dx.doi.org/10.1007/s00233-022-10290-6.
10.1007/s00233-022-10290-6
- Bernardo Hipólito Fernandes; Gracinda M.S. Gomes. "¿¿-Algebras". Communications in Algebra (2021): http://dx.doi.org/10.1080/00927872.2021.1910283.
10.1080/00927872.2021.1910283
- Bernardo H. Fernandes; Gracinda M. S. Gomes. "A topological shuttle between inequalities and pseudoinequalities". Semigroup
Forum (2021): http://dx.doi.org/10.1007/s00233-021-10167-0.
10.1007/s00233-021-10167-0
- Mário J.J. Branco; Gracinda M.S. Gomes; Jean-Éric Pin; Xaro Soler-Escrivà. "On formations of monoids". Journal of Pure
and Applied Algebra (2020): http://dx.doi.org/10.1016/j.jpaa.2020.106401.
10.1016/j.jpaa.2020.106401
- Mário Branco; Gracinda M.S. Gomes; Pedro V. Silva. "On the semigroup rank of a group". Semigroup Forum (2019): http://dx.doi.org/10.1007/s00233-018-9982-x.
10.1007/s00233-018-9982-x
- João Araújo; Wolfram Bentz; Gracinda M. S. Gomes. "Congruences on direct products of transformation and matrix monoids". Semigroup
Forum (2018): http://dx.doi.org/10.1007/s00233-018-9931-8.
10.1007/s00233-018-9931-8
- Mário J.J. Branco; Gracinda M.S. Gomes; Victoria Gould; Yanhui Wang. "Ehresmann monoids: Adequacy and expansions". Journal
of Algebra (2018): http://dx.doi.org/10.1016/j.jalgebra.2018.06.036.
10.1016/j.jalgebra.2018.06.036
- Branco, M.J.J.; Gomes, G.M.S.; Silva, P.V.. "Takahasi semigroups". Forum Mathematicum 29 5 (2017): 1145-1161. http://www.scopus.com/inward/record.url?eid=2-s2.0-85028881447&partnerID=MN8TOARS.
10.1515/forum-2015-0059
- Branco, M.J.J.; Gomes, G.M.S.; Gould, V.. "Ehresmann monoids". Journal of Algebra 443 (2015): 349-382. http://www.scopus.com/inward/record.url?eid=2-s2.0-84939158722&partnerID=MN8TOARS.
10.1016/j.jalgebra.2015.06.035
- Gomes, G.M.S.; Santa-Clara, C.; Soares, F.. "The semigroup ring of a restriction semigroup with an inverse skeleton". Semigroup
Forum 90 2 (2015): 449-474. http://www.scopus.com/inward/record.url?eid=2-s2.0-84939877594&partnerID=MN8TOARS.
10.1007/s00233-014-9612-1
- Gracinda M. S. Gomes; Nik Ruškuc. "John Macintosh Howie: work and legacy". Semigroup Forum (2014): http://dx.doi.org/10.1007/s00233-014-9628-6.
10.1007/s00233-014-9628-6
- Gomes, G.M.S.; Gould, V.. "Left adequate and left Ehresmann monoids II". Journal of Algebra 348 1 (2011): 171-195.
http://www.scopus.com/inward/record.url?eid=2-s2.0-80755163588&partnerID=MN8TOARS.
10.1016/j.jalgebra.2011.09.006
- Branco, M.J.J.; Gomes, G.M.S.; Gould, V.. "Left adequate and left Ehresmann monoids". International Journal of Algebra
and Computation 21 7 (2011): 1259-1284. http://www.scopus.com/inward/record.url?eid=2-s2.0-82955194542&partnerID=MN8TOARS.
10.1142/S0218196711006935
- Fernandes, V.H.; Gomes, G.M.S.; Jesus, M.M.. "The cardinal and the idempotent number of various monoids of transformations
on a finite chain". Bulletin of the Malaysian Mathematical Sciences Society 34 1 (2011): 79-85. http://www.scopus.com/inward/record.url?eid=2-s2.0-79952346644&partnerID=MN8TOARS.
- Branco, M.J.J.; Gomes, G.M.S.; Gould, V.. "Extensions and covers for semigroups whose idempotents form a left regular band".
Semigroup Forum 81 1 (2010): 51-70. http://www.scopus.com/inward/record.url?eid=2-s2.0-77954860335&partnerID=MN8TOARS.
10.1007/s00233-010-9239-9
- Fountain, J.; Gomes, G.; Gould, V.. "Membership of A ¿ G for classes of finite weakly abundant semigroups". Periodica Mathematica
Hungarica 59 1 (2009): 9-36. http://www.scopus.com/inward/record.url?eid=2-s2.0-71449109624&partnerID=MN8TOARS.
10.1007/s10998-009-9009-1
- Fernandes, V.H.; Gomes, G.M.S.; Jesus, M.M.. "Congruences on monoids of transformations preserving the orientation on a finite
chain". Journal of Algebra 321 3 (2009): 743-757. http://www.scopus.com/inward/record.url?eid=2-s2.0-57649230089&partnerID=MN8TOARS.
10.1016/j.jalgebra.2008.11.005
- Branco, M.J.J.; Gomes, G.M.S.. "The generalized Szendrei expansion of an R-unipotent semigroup". Acta Mathematica Hungarica
123 1-2 (2009): 11-26. http://www.scopus.com/inward/record.url?eid=2-s2.0-64549087227&partnerID=MN8TOARS.
10.1007/s10474-009-8025-1
- Fountain, J.; Gomes, G.M.S.; Gould, V.. "The free ample monoid". International Journal of Algebra and Computation 19
4 (2009): 527-554. http://www.scopus.com/inward/record.url?eid=2-s2.0-67650787423&partnerID=MN8TOARS.
10.1142/S0218196709005214
- Gomes, G.M.S.; Gould, V.. "Fundamental semigroups having a band of idempotents". Semigroup Forum 77 2 (2008): 279-299.
http://www.scopus.com/inward/record.url?eid=2-s2.0-52949146037&partnerID=MN8TOARS.
10.1007/s00233-007-9041-5
- Gomes, G.M.S.; Szendrei, M.B.. "Even covers for left ample semigroups". Semigroup Forum 74 2 (2007): 293-305. http://www.scopus.com/inward/record.url?eid=2-s2.0-34547338444&partnerID=MN8TOARS.
10.1007/s00233-006-0668-4
- Gomes, G.M.S.; Szendrei, M.B.. "Almost factorizable weakly ample semigroups". Communications in Algebra 35 11 (2007):
3503-3523. http://www.scopus.com/inward/record.url?eid=2-s2.0-35448996831&partnerID=MN8TOARS.
10.1080/00927870701509503
- Gomes, G.M.S.. "The generalized prefix expansion of a weakly left ample semigroup". Semigroup Forum 72 3 (2006): 387-403.
http://www.scopus.com/inward/record.url?eid=2-s2.0-33744905203&partnerID=MN8TOARS.
10.1007/s00233-005-0522-0
- Fountain, J.; Gomes, G.M.S.. "Proper covers of ample monoids". Proceedings of the Edinburgh Mathematical Society 49
2 (2006): 277-289. http://www.scopus.com/inward/record.url?eid=2-s2.0-33744807444&partnerID=MN8TOARS.
10.1017/S0013091504000070
- Fountain, J.; Gomes, G.M.S.. "Finite abundant semigroups in which the idempotents form a subsemigroup". Journal of Algebra
295 2 (2006): 303-313. http://www.scopus.com/inward/record.url?eid=2-s2.0-31044436904&partnerID=MN8TOARS.
10.1016/j.jalgebra.2005.10.033
- Gomes, G.M.S.; Sezinando, H.; Pin, J.-E.. "Presentations of the schützenberger product of n groups". Communications in
Algebra 34 4 (2006): 1213-1235. http://www.scopus.com/inward/record.url?eid=2-s2.0-33645780152&partnerID=MN8TOARS.
10.1080/00927870500454075
- Gomes, G.M.S.. "Proper extensions of weakly left ample semigroups". Acta Mathematica Hungarica 109 1-2 (2005): 33-51.
http://www.scopus.com/inward/record.url?eid=2-s2.0-27844527526&partnerID=MN8TOARS.
10.1007/s10474-005-0233-8
- Fernandes, V.H.; Gomes, G.M.S.; Jesus, M.M.. "Presentations for some monoids of partial transformations on a finite chain".
Communications in Algebra 33 2 (2005): 587-604. http://www.scopus.com/inward/record.url?eid=2-s2.0-23944439698&partnerID=MN8TOARS.
10.1081/AGB-200047446
- Fernandes, V.H.; Gomes, G.M.S.; Jesus, M.M.. "Congruences on monoids of order-preserving or order-reversing transformations
on a finite chain". Glasgow Mathematical Journal 47 2 (2005): 413-424. http://www.scopus.com/inward/record.url?eid=2-s2.0-23944469071&partnerID=MN8TOARS.
10.1017/S0017089505002648
- Fernandes, Vítor; Gomes, Gracinda; Jesus, Manuel. "Presentations for Some Monoids of Injective Partial Transformations on
a Finite Chain". Southeast Asian Bulletin of Mathematics 28 (2004): 903-918.
- Auinger, K.; Gomes, G.M.S.; Gould, V.; Steinberg, B.. "An application of a theorem of Ash to finite covers". Studia Logica
78 1-2 (2004): 45-57. http://www.scopus.com/inward/record.url?eid=2-s2.0-35948958664&partnerID=MN8TOARS.
- Gomes, G.M.S.; Gould, V.. "Finite Proper Covers in a Class of Finite Semigroups with Commuting Idempotents". Semigroup
Forum 66 3 (2003): 433-454. http://www.scopus.com/inward/record.url?eid=2-s2.0-1642277929&partnerID=MN8TOARS.
- Gomes, G.M.S.; Gould, V.. "Fundamental Ehresmann Semigroups". Semigroup Forum 63 1 (2001): 11-33. http://www.scopus.com/inward/record.url?eid=2-s2.0-0042911865&partnerID=MN8TOARS.
- Araújo, I.M.; Branco, M.J.J.; Fernandes, V.H.; Gomes, G.M.S.; Ruškuc, N.. "On Generators and Relations for Unions of Semigroups".
Semigroup Forum 63 1 (2001): 49-62. http://www.scopus.com/inward/record.url?eid=2-s2.0-0003112080&partnerID=MN8TOARS.
10.1007/s002330010053
- Gomes, G.M.S.; Giraldes, E.; McAlister, D.B.. "On a Class of Lattice Ordered Inverse Semigroups". Journal of Algebra
230 2 (2000): 496-517. http://www.scopus.com/inward/record.url?eid=2-s2.0-0034662532&partnerID=MN8TOARS.
10.1006/jabr.2000.8324
- "Graph expansions of unipotent monoids". (2000): http://www.tandfonline.com/doi/abs/10.1080/00927870008841083#preview.
10.1080/00927870008841083
- Fountain, J.; Gomes, G.M.S.. "Primitive inverse congruences on categorical semigroups". Proceedings of the Edinburgh Mathematical
Society 43 2 (2000): 395-413. http://www.scopus.com/inward/record.url?eid=2-s2.0-23044517926&partnerID=MN8TOARS.
10.1017/S001309150002099X
- Gomes, G.M.S.; Gould, V.. "Proper weakly left ample semigroups". International Journal of Algebra and Computation 9
6 (1999): 721-739. http://www.scopus.com/inward/record.url?eid=2-s2.0-0347024563&partnerID=MN8TOARS.
10.1142/S0218196799000412
- Fountain, J.; Gomes, G.M.S.; Gould, V.. "A Munn type representation for a class of E-semiadequate semigroups". Journal
of Algebra 218 2 (1999): 693-714. http://www.scopus.com/inward/record.url?eid=2-s2.0-0033566520&partnerID=MN8TOARS.
10.1006/jabr.1999.7871
- "Enlargements, semiabundancy and unipotent monoids". (1999): http://www.tandfonline.com/doi/abs/10.1080/00927879908826450#preview.
10.1080/00927879908826450
- Gomes, G.M.S.; Szendrei, M.B.. "Idempotent pure extensions by inverse semigroups via quivers". Journal of Pure and Applied
Algebra 127 1 (1998): 15-38. http://www.scopus.com/inward/record.url?eid=2-s2.0-0032063244&partnerID=MN8TOARS.
10.1016/S0022-4049(97)00110-2
- Gomes, G.M.S.; Howie, J.M.. "Semigroups with zero whose idempotents form a subsemigroup". Royal Society of Edinburgh -
Proceedings A 128 2 (1998): 265-281. http://www.scopus.com/inward/record.url?eid=2-s2.0-22044454302&partnerID=MN8TOARS.
- "A P-theorem for inverse semigroups with zero". Portugal. Math. (1996):
- Gomes, G.M.S.. "Idempotent Endomorphisms of an Independence Algebra of Finite Rank". Proceedings of the Edinburgh Mathematical
Society 38 1 (1995): 107-116. http://www.scopus.com/inward/record.url?eid=2-s2.0-84973981377&partnerID=MN8TOARS.
10.1017/S0013091500006234
- "Proper left type-A covers". Portugal. Math., (1994):
- John Fountain; Gracinda M. S. Gomes. "Proper left type-A monoids revisited". Glasgow Mathematical Journal (1993): http://dx.doi.org/10.1017/s0017089500009873.
10.1017/s0017089500009873
- Gomes, G.M.S.. "A characterization of the group congruences on a semigroup". Semigroup Forum 46 1 (1993): 48-53. http://www.scopus.com/inward/record.url?eid=2-s2.0-51249162950&partnerID=MN8TOARS.
10.1007/BF02573543
- Fountain, J.; Gomes, G.M.S.. "Left proper E-dense monoids". Journal of Pure and Applied Algebra 80 1 (1992): 1-27.
http://www.scopus.com/inward/record.url?eid=2-s2.0-38249012155&partnerID=MN8TOARS.
10.1016/0022-4049(92)90066-O
- Gomes, G.M.S.; Howie, J.M.. "On the ranks of certain semigroups of order-preserving transformations". Semigroup Forum
45 1 (1992): 272-282. http://www.scopus.com/inward/record.url?eid=2-s2.0-0000063566&partnerID=MN8TOARS.
10.1007/BF03025769
- "Group congruences on eventually inverse semigroup". Portugal. Math. (1992):
- John Fountain; Gracinda M. S. Gomes. "The Szendrei expansion of a semigroup". Mathematika (1990): http://dx.doi.org/10.1112/s0025579300012973.
10.1112/s0025579300012973
- Gomes, G.M.S.. "Orthodox congruences on regular semigroups". Semigroup Forum 37 1 (1988): 149-166. http://www.scopus.com/inward/record.url?eid=2-s2.0-51249170819&partnerID=MN8TOARS.
10.1007/BF02573131
- Gomes, G.M.S.; Howie, J.M.. "Nilpotents in finite symmetric inverse semigroups". Proceedings of the Edinburgh Mathematical
Society 30 3 (1987): 383-395. http://www.scopus.com/inward/record.url?eid=2-s2.0-84976003287&partnerID=MN8TOARS.
10.1017/S0013091500026778
- "ON THE RANKS OF CERTAIN FINITE-SEMIGROUPS OF TRANSFORMATIONS". (1987):
10.1017/S0305004100066780
- Gomes, G.M.S.. "The lattice of r-unipotent congruences on a regular semigroup". Semigroup Forum 33 1 (1986): 159-173.
http://www.scopus.com/inward/record.url?eid=2-s2.0-51649155385&partnerID=MN8TOARS.
10.1007/BF02573190
- Gomes, M.S.. "Some results on congruences on r-unipotent semigroups". Semigroup Forum 33 1 (1986): 175-185. http://www.scopus.com/inward/record.url?eid=2-s2.0-51649148673&partnerID=MN8TOARS.
10.1007/BF02573191
- Gomes, G.M.S.. "R-unipotent congruences on regular semigroups". Semigroup Forum 31 1 (1985): 265-280. http://www.scopus.com/inward/record.url?eid=2-s2.0-51249171525&partnerID=MN8TOARS.
10.1007/BF02572656
- Gomes, G.M.S.. "On Left Quasinormal Orthodox Semigroups". Proceedings of the Royal Society of Edinburgh: Section A Mathematics
95 1-2 (1983): 59-71. http://www.scopus.com/inward/record.url?eid=2-s2.0-64549097157&partnerID=MN8TOARS.
10.1017/S0308210500015791
- T. S. Blyth; Gracinda M. S. Gomes. "On the compatibility of the natural order on a regular semigroup". Proceedings of the
Royal Society of Edinburgh: Section A Mathematics (1983): http://dx.doi.org/10.1017/s0308210500016140.
10.1017/s0308210500016140
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