Vítor Hugo Fernandes
Departamento de Matemática
vhf at fct unl pt
(email)
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On generators and relations for unions of semigroups
Citation:
Araújo, Isabel M., Mário J. J. Branco, Vitor H. Fernandes, Gracinda M. S. Gomes, and N. Ruškuc. "On generators and relations for unions of semigroups." Semigroup Forum. 63 (2001): 49-62.
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Recent Publications
Corrigendum on "Oriented transformations on a finite chain: another description"
On partial endomorphisms of a star graph
On semigroups of orientation-preserving partial permutations with restricted range
On monoids of endomorphisms of a cycle graph
On the monoid of partial isometries of a wheel graph
Presentations for three remarkable submonoids of the dihedral inverse monoid on a finite set
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