Data:	2012
Resum:	The pseudovariety PCS which is generated by all power semigroups of finite completely simple semigroups is characterized in various ways. For example, the equalities PCS = Jm CS = BGm RB are established. This resolves a problem raised by Kad'ourek and leads to several transparent algorithms for deciding membership in PCS.
Drets:	Tots els drets reservats
Llengua:	Anglès
Forma:	article ; publishedVersion
Matèria:	Power semigroup ; Power pseudovariety ; Power operator ; Completely simple ; Semigroup ; Membership problem
Publicat a:	Publicacions matemàtiques, Vol. 56, Núm. 2 (2012) , p. 449-465, ISSN 0214-1493

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