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Identification

Personal identification

Full name
Vítor Hugo Bento Dias Fernandes

Citation names

  • Fernandes, Vítor
  • Fernandes, Vítor Hugo
  • Fernandes, Vítor H.
  • Fernandes, V. H.

Author identifiers

Ciência ID
DD19-BDAC-26D5
ORCID iD
0000-0003-1057-4975
AuthenticusID
R-000-HK6
Google Scholar ID
pw9fxwMAAAAJ
Researcher Id
M-9549-2013
Scopus Author Id
7006546339

Websites

Knowledge fields

  • Exact Sciences - Mathematics - Pure Mathematics
Outputs

Publications

Book
  1. Jorge Manuel Leocadio Andre; Vítor Hugo Fernandes; Mário J. J. Branco; Gracinda M. S. Gomes; John Fountain; John C. Meakin. Semigroups and formal languages. Proceedings of the international conference in honour of the 65th birthday of Donald B. McAlister, Lisboa, Portugal, July 12-15, 2005. World Scientific. 2007.
    10.1142/6476
Book chapter
  1. Delgado, Manuel; Fernandes, Vítor H.. "Abelian kernels, solvable monoids and the abelian kernel length of a finite monoid". 68–85-68–85. 2004.
    10.1142/9789812702616_0005
  2. Fernandes, Vítor H.. "Presentations for some monoids of partial transformations on a finite chain: a survey". 363–378-363–378. 2002.
    10.1142/9789812776884_0015
Journal article
  1. Dimitrova, I.; Fernandes, V.H.; Koppitz, J.; Quinteiro, T.M.. "On Three Submonoids of the Dihedral Inverse Monoid on a Finite Set". Bulletin of the Malaysian Mathematical Sciences Society 47 1 (2024): http://www.scopus.com/inward/record.url?eid=2-s2.0-85179338517&partnerID=MN8TOARS.
    10.1007/s40840-023-01620-0
  2. Vítor H. Fernandes. "On the monoid of partial isometries of a wheel graph". Asian-European Journal of Mathematics (2023): https://doi.org/10.1142/S1793557123502388.
    10.1142/S1793557123502388
  3. De Biao Li; Vítor H. Fernandes. "Endomorphisms of semigroups of monotone transformations". Journal of Algebra and Its Applications (2023): https://doi.org/10.1142/S0219498824502244.
    10.1142/S0219498824502244
  4. Vítor H. Fernandes; Tânia Paulista. "On the monoid of partial isometries of a finite star graph". Communications in Algebra (2023): https://doi.org/10.1080/00927872.2022.2121404.
    10.1080/00927872.2022.2121404
  5. Fernandes, V.H.; Paulista, T.. "On the monoid of partial isometries of a cycle graph". Turkish Journal of Mathematics 47 6 (2023): 1746-1760. http://www.scopus.com/inward/record.url?eid=2-s2.0-85173496305&partnerID=MN8TOARS.
    10.55730/1300-0098.3460
  6. Fernandes, V.H.. "ORIENTED TRANSFORMATIONS ON A FINITE CHAIN: ANOTHER DESCRIPTION". Communications of the Korean Mathematical Society 38 3 (2023): 725-731. http://www.scopus.com/inward/record.url?eid=2-s2.0-85168599762&partnerID=MN8TOARS.
    10.4134/CKMS.c220272
  7. Dimitrova, I.; Fernandes, V.H.; Koppitz, J.; Quinteiro, T.M.. "Presentations for three remarkable submonoids of the dihedral inverse monoid on a finite set". Semigroup Forum 107 2 (2023): 315-338. http://www.scopus.com/inward/record.url?eid=2-s2.0-85175306295&partnerID=MN8TOARS.
    10.1007/s00233-023-10396-5
  8. De Biao Li; Vítor H. Fernandes. "Endomorphisms of semigroups of oriented transformations". Semigroup Forum (2023): http://dx.doi.org/10.1007/s00233-022-10325-y.
    10.1007/s00233-022-10325-y
  9. Rita Caneco; Vítor H. Fernandes; Teresa M. Quinteiro. "Ranks and presentations of some normally ordered inverse semigroups". Periodica Mathematica Hungarica 85 2 (2022): 435-447. http://dx.doi.org/10.1007/s10998-022-00448-8.
    10.1007/s10998-022-00448-8
  10. Vitor H. Fernandes; Tania Paulista. "On the Rank of Monoids of Endomorphisms of a Finite Directed Path". Asian-European Journal of Mathematics (2022): https://doi.org/10.1142/S1793557123500699.
    10.1142/S1793557123500699
  11. I. Dimitrova; Vítor Hugo Fernandes; J. Koppitz; T.M. Quinteiro. "Partial automorphisms and injective partial endomorphisms of a finite undirected path". Semigroup Forum 103 1 (2021): 87-105. https://novaresearch.unl.pt/en/publications/cb0802f4-2684-43e5-bf6a-ef622c340347.
    10.1007/s00233-021-10193-y
  12. V. H. Fernandes; M. M. Jesus; B. Singha. "On orientation-preserving transformations of a chain". Communications in Algebra 49 6 (2021): 2300-2325. https://doi.org/10.1080/00927872.2020.1870996.
    10.1080/00927872.2020.1870996
  13. Vítor Hugo Fernandes. "The Vagner-Preston representation of a block-group". Southeast Asian Bulletin Of Mathematics 45 6 (2021): 805-812. https://novaresearch.unl.pt/en/publications/36db2c4f-e7b4-45d8-a9c2-3f8af0c42d51.
  14. Vítor Hugo Fernandes; Ilinka Dimitrova; Jörg Koppitz; Teresa M. Quinteiro. "Ranks of Monoids of Endomorphisms of a Finite Undirected Path". Bulletin of the Malaysian Mathematical Sciences Society (2020): http://dx.doi.org/10.1007/s40840-019-00762-4.
    10.1007/s40840-019-00762-4
  15. "Endomorphisms of semigroups of order-preserving partial transformations". Semigroup Forum (2019): http://dx.doi.org/10.1007/s00233-018-9948-z.
    10.1007/s00233-018-9948-z
  16. "The Rank of the Semigroup of All Order-Preserving Transformations on a Finite Fence". Bulletin of the Malaysian Mathematical Sciences Society (2019): http://dx.doi.org/10.1007/s40840-017-0598-1.
    10.1007/s40840-017-0598-1
  17. Dimitrova, I.; Fernandes, V.H.; Koppitz, J.. "A note on generators of the endomorphism semigroup of an infinite countable chain". Journal of Algebra and its Applications 16 2 (2017): http://www.scopus.com/inward/record.url?eid=2-s2.0-84960422919&partnerID=MN8TOARS.
    10.1142/S0219498817500311
  18. Fernandes, V.H.; Honyam, P.; Quinteiro, T.M.; Singha, B.. "On Semigroups of Orientation-preserving Transformations with Restricted Range". Communications in Algebra 44 1 (2016): 253-264. http://www.scopus.com/inward/record.url?eid=2-s2.0-84944790117&partnerID=MN8TOARS.
    10.1080/00927872.2014.975345
  19. Fernandes, V.H.; Quinteiro, T.M.. "Presentations for monoids of finite partial isometries". Semigroup Forum 93 1 (2016): 97-110. http://www.scopus.com/inward/record.url?eid=2-s2.0-84944599007&partnerID=MN8TOARS.
    10.1007/s00233-015-9759-4
  20. Fernandes, V.H.; Quinteiro, T.M.. "A note on bilateral semidirect product decompositions of some monoids of order-preserving partial permutations". Bulletin of the Korean Mathematical Society 53 2 (2016): 495-506. http://www.scopus.com/inward/record.url?eid=2-s2.0-84962040350&partnerID=MN8TOARS.
    10.4134/BKMS.2016.53.2.495
  21. Cicalò, S.; Fernandes, V.H.; Schneider, C.. "Partial transformation monoids preserving a uniform partition". Semigroup Forum 90 2 (2015): 532-544. http://www.scopus.com/inward/record.url?eid=2-s2.0-84924405826&partnerID=MN8TOARS.
    10.1007/s00233-014-9629-5
  22. Zhao, P.; Fernandes, V.H.. "The Ranks of Ideals in Various Transformation Monoids". Communications in Algebra 43 2 (2015): 674-692. http://www.scopus.com/inward/record.url?eid=2-s2.0-84910002308&partnerID=MN8TOARS.
    10.1080/00927872.2013.847946
  23. Fernandes, V.T.; Quinteiro, T.M.. "On the Ranks of Certain Monoids of Transformations that Preserve a Uniform Partition". Communications in Algebra 42 2 (2014): 615-636. http://www.scopus.com/inward/record.url?eid=2-s2.0-84886377277&partnerID=MN8TOARS.
    10.1080/00927872.2012.720322
  24. Fernandes, V.H.; Honyam, P.; Quinteiro, T.M.; Singha, B.. "On semigroups of endomorphisms of a chain with restricted range". Semigroup Forum 89 1 (2014): 77-104. http://www.scopus.com/inward/record.url?eid=2-s2.0-84942193328&partnerID=MN8TOARS.
    10.1007/s00233-013-9548-x
  25. Fernandes, V.H.; Sanwong, J.. "On the ranks of semigroups of transformations on a finite set with restricted range". Algebra Colloquium 21 3 (2014): 497-510. http://www.scopus.com/inward/record.url?eid=2-s2.0-84903307086&partnerID=MN8TOARS.
    10.1142/S1005386714000431
  26. Delgado, M.; Fernandes, V.H.. "Rees quotients of numerical semigroups". Portugaliae Mathematica 70 2 (2013): 93-112. http://www.scopus.com/inward/record.url?eid=2-s2.0-84882569587&partnerID=MN8TOARS.
    10.4171/PM/1927
  27. Fernandes, V.H.; Quinteiro, T.M.. "The cardinal of various monoids of transformations that preserve a uniform partition". Bulletin of the Malaysian Mathematical Sciences Society 35 4 (2012): 885-896. http://www.scopus.com/inward/record.url?eid=2-s2.0-84864691641&partnerID=MN8TOARS.
  28. Dimitrova, I.; Fernandes, V.H.; Koppitz, J.. "The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain". Publicationes Mathematicae 81 1-2 (2012): 11-29. http://www.scopus.com/inward/record.url?eid=2-s2.0-84867544836&partnerID=MN8TOARS.
    10.5486/PMD.2012.4897
  29. Costa, A.; Delgado, M.; Fernandes, V.H.. "Preface". International Journal of Algebra and Computation 21 7 (2011): http://www.scopus.com/inward/record.url?eid=2-s2.0-82955194543&partnerID=MN8TOARS.
    10.1142/S0218196711006959
  30. Araújo, J.; Fernandes, V.H.; Jesus, M.M.; Maltcev, V.; Mitchell, J.D.. "Automorphisms of partial endomorphism semigroups". Publicationes Mathematicae 79 1-2 (2011): 23-39. http://www.scopus.com/inward/record.url?eid=2-s2.0-84867535173&partnerID=MN8TOARS.
    10.5486/PMD.2011.4703
  31. 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.
  32. Fernandes, V.H.; Quinteiro, T.M.. "On the monoids of transformations that preserve the order and a uniform partition". Communications in Algebra 39 8 (2011): 2798-2815. http://www.scopus.com/inward/record.url?eid=2-s2.0-80051824264&partnerID=MN8TOARS.
    10.1080/00927872.2010.492043
  33. Fernandes, V.H.; Quinteiro, T.M.. "Bilateral semidirect product decompositions of transformation monoids". Semigroup Forum 82 2 (2011): 271-287. http://www.scopus.com/inward/record.url?eid=2-s2.0-79953119110&partnerID=MN8TOARS.
    10.1007/s00233-011-9290-1
  34. Fernandes, V.H.; Volkov, M.V.. "On divisors of semigroups of order-preserving mappings of a finite chain". Semigroup Forum 81 3 (2010): 551-554. http://www.scopus.com/inward/record.url?eid=2-s2.0-78049468073&partnerID=MN8TOARS.
    10.1007/s00233-010-9257-7
  35. Fernandes, V.H.; Jesus, M.M.; Maltcev, V.; Mitchell, J.D.. "Endomorphisms of the semigroup of order-preserving mappings". Semigroup Forum 81 2 (2010): 277-285. http://www.scopus.com/inward/record.url?eid=2-s2.0-77956057726&partnerID=MN8TOARS.
    10.1007/s00233-010-9220-7
  36. 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
  37. Fernandes, V.H.. "On divisors of pseudovarieties generated by some classes of full transformation semigroups". Algebra Colloquium 15 4 (2008): 581-588. http://www.scopus.com/inward/record.url?eid=2-s2.0-58149514126&partnerID=MN8TOARS.
  38. Fernandes, V.H.. "Normally ordered semigroups". Glasgow Mathematical Journal 50 2 (2008): 325-333. http://www.scopus.com/inward/record.url?eid=2-s2.0-42549171459&partnerID=MN8TOARS.
    10.1017/S0017089508004230
  39. Fernandes, V.H.. "The idempotent-separating degree of a block-group". Semigroup Forum 76 3 (2008): 579-583. http://www.scopus.com/inward/record.url?eid=2-s2.0-42249098250&partnerID=MN8TOARS.
    10.1007/s00233-008-9043-y
  40. André, J.M.; Fernandes, V.H.; Mitchell, J.D.. "Largest 2-generated subsemigroups of the symmetric inverse semigroup". Proceedings of the Edinburgh Mathematical Society 50 3 (2007): 551-561. http://www.scopus.com/inward/record.url?eid=2-s2.0-38049150729&partnerID=MN8TOARS.
    10.1017/S0013091505001598
  41. Cordeiro, E.; Delgado, M.; Fernandes, V.H.. "Relative abelian kernels of some classes of transformation monoids". Bulletin of the Australian Mathematical Society 73 3 (2006): 375-404. http://www.scopus.com/inward/record.url?eid=2-s2.0-33746042164&partnerID=MN8TOARS.
    10.1017/S0004972700035413
  42. 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
  43. Delgado, M.; Fernandes, V.H.. "Solvable monoids with commuting idempotents". International Journal of Algebra and Computation 15 3 (2005): 547-570. http://www.scopus.com/inward/record.url?eid=2-s2.0-22044447880&partnerID=MN8TOARS.
    10.1142/S0218196705002414
  44. 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
  45. Delgado, M.; Fernandes, V.H.; Margolis, S.; Steinberg, B.. "On semigroups whose idempotent-generated subsemigroup is aperiodic". International Journal of Algebra and Computation 14 5-6 (2004): 655-665. http://www.scopus.com/inward/record.url?eid=2-s2.0-12344285008&partnerID=MN8TOARS.
  46. Delgado, M.; Fernandes, V.H.. "Abelian kernels of monoids of order-preserving maps and of some of its extensions". Semigroup Forum 68 3 (2004): 335-356. http://www.scopus.com/inward/record.url?eid=2-s2.0-2942560945&partnerID=MN8TOARS.
    10.1007/s00233-003-0014-z
  47. Fernandes, V.H.. "The monoid of all injective order preserving partial transformations on a finite chain". Semigroup Forum 62 2 (2001): 178-204. http://www.scopus.com/inward/record.url?eid=2-s2.0-0042911949&partnerID=MN8TOARS.
  48. Fernandes, V.H.. "A division theorem for the pseudovariety generated by semigroups of orientation preserving transformations on a finite chain". Communications in Algebra 29 1 (2001): 451-456. http://www.scopus.com/inward/record.url?eid=2-s2.0-0035532055&partnerID=MN8TOARS.
    10.1081/AGB-100000811
  49. 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.
  50. Fernandes, V.H.. "The monoid of all injective orientation preserving partial transformations on a finite chain". Communications in Algebra 28 7 (2000): 3401-3426. http://www.scopus.com/inward/record.url?eid=2-s2.0-0034338129&partnerID=MN8TOARS.
  51. Delgado, M.; Fernandes, V.H.. "Abelian Kernels of some monoids of injective partial transformations and an application". Semigroup Forum 61 3 (2000): 435-452. http://www.scopus.com/inward/record.url?eid=2-s2.0-0005988434&partnerID=MN8TOARS.
    10.1007/s002330000033
  52. Fernandes, V.H.. "Normally Ordered Inverse Semigroups". Semigroup Forum 56 3 (1998): 418-433. http://www.scopus.com/inward/record.url?eid=2-s2.0-0346876115&partnerID=MN8TOARS.
    10.1007/PL00005955
  53. Fernandes, VH. "Semigroups of order preserving mappings on a finite chain: A new class of divisors". Semigroup Forum 54 2 (1997): 230-236.
    10.1007/BF02676604

Other

Other output
  1. On monoids of endomorphisms of a cycle graph. 2023. Dimitrova, I.; Fernandes, V.H.; Koppitz, J.; Quinteiro, T.M.. http://www.scopus.com/inward/record.url?eid=2-s2.0-85174879667&partnerID=MN8TOARS.
    10.48550/arXiv.2310.04149
  2. On the cyclic inverse monoid on a finite set. 2022. Fernandes, V.H.. http://www.scopus.com/inward/record.url?eid=2-s2.0-85142211919&partnerID=MN8TOARS.
    10.48550/arXiv.2211.02155