Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Gracinda M S Gomes"'
Autor:
Gracinda M S Gomes, Mario J J Branco, Jorge M Andre, Vitor H Fernandes, John Fountain, John C Meakin
This festschrift volume in honour of Donald B McAlister on the occasion of his 65th birthday presents papers from leading researchers in semigroups and formal languages. The contributors cover a number of areas of current interest: from pseudovarieti
Autor:
Gracinda M. S. Gomes, Isabel J. Nobre
Publikováno v:
Semigroup Forum. 105:217-243
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94676f3a672d8d7e1af3122adc1f016f
https://doi.org/10.1007/s00233-022-10290-6
https://doi.org/10.1007/s00233-022-10290-6
In recent years, semigroups and languages have seen huge developments and found their motivation in other fields of mathematics as well as in computer science. This book is a collection of original contributions in those fields.The proceedings have b
The thematic term on “Semigroups, Algorithms, Automata and Languages” organized at the International Centre of Mathematics (Coimbra, Portugal) in May-July 2001 was the gathering point for researchers working in the field of semigroups, algorithms
Publikováno v:
Communications in Algebra. 49:3969-3999
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fc90b9a0333a05880e074cf9154016f
https://doi.org/10.1080/00927872.2021.1910283
https://doi.org/10.1080/00927872.2021.1910283
Publikováno v:
Semigroup Forum. 102:916-924
Topological procedures to relate pseudoinequalities that define a pseudovariety of ordered algebras with inequalities that ultimately define it, and vice-versa, are presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccfc25c93e419a9c7e43814925b59387
https://doi.org/10.1007/s00233-021-10167-0
https://doi.org/10.1007/s00233-021-10167-0
Publikováno v:
RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Journal of Pure and Applied Algebra
Journal of Pure and Applied Algebra, Elsevier, 2020, 224 (11), pp.106401. ⟨10.1016/j.jpaa.2020.106401⟩
Universidad de Alicante (UA)
Journal of Pure and Applied Algebra
Journal of Pure and Applied Algebra, Elsevier, 2020, 224 (11), pp.106401. ⟨10.1016/j.jpaa.2020.106401⟩
A formation of monoids is a class of finite monoids closed under taking quotients and subdirect products. Formations of monoids were first studied in connection with formal language theory, but in this paper, we come back to an algebraic point of vie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60b926bf337fcd10eb192e93698c9c0e
http://hdl.handle.net/10045/107433
http://hdl.handle.net/10045/107433
Publikováno v:
Semigroup Forum. 97:384-416
Mal $$'$$ cev described the congruences of the monoid $$\mathcal {T}_n$$ of all full transformations on a finite set $$X_n=\{1, \dots ,n\}$$ . Since then, congruences have been characterized in various other monoids of (partial) transformations on $$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58f9f722a912cb0b435a0592ab2a97b4
https://doi.org/10.1007/s00233-018-9931-8
https://doi.org/10.1007/s00233-018-9931-8
It is known that an Ehresmann monoid P ( T , Y ) may be constructed from a monoid T acting via order-preserving maps on both sides of a semilattice Y with identity, such that the actions satisfy an appropriate compatibility criterion. Our main result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdb8096f31f4b7935cc09a5824a38f52
https://eprints.whiterose.ac.uk/134067/1/adequatmonoids_030618.pdf
https://eprints.whiterose.ac.uk/134067/1/adequatmonoids_030618.pdf
For an arbitrary group G, it is known that either the semigroup rank $$G{\text {rk}_\text {s}}$$ equals the group rank $$G{\text {rk}_\text {g}}$$, or $$G{\text {rk}_\text {s}}= G{\text {rk}_\text {g}}+1$$. This is the starting point for the research
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2855739e0b0048bc28c7baef1e1fa739