Horváth Gábor; Kátai-Urbán Kamilla; Pach Péter Pál; Pluhár Gabriella; Pongrácz András; Szabó Csaba:
On free algebras in varieties generated by iterated semidirect products of semilattices.
INTERNATIONAL JOURNAL OF ALGEBRA AND COMPUTATION, 22 (7).
ISSN 0218-1967
(2012)
Kátai-Urbán Kamilla; Pach Péter Pál; Pluhár Gabriella; Pongrácz András; Szabó Csaba:
On the word problem for syntactic monoids of piecewise testable languages.
SEMIGROUP FORUM, 84 (2).
pp. 323-332.
ISSN 0037-1912
(2012)
Horváth Gábor; Kátai-Urbán Kamilla; Pach Péter Pál; Pluhár Gabriella; Szabó Csaba; Pongrácz András:
The number of monounary algebras.
ALGEBRA UNIVERSALIS, 66 (1-2).
pp. 81-83.
ISSN 0002-5240
(2011)