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monounary algebra; connected monounary algebra; retract; retract irreducibility
Let $\Cal A$ be a connected monounary algebra. The paper deals with retract irreducibility of $\Cal A$ in the class of all connected monounary algebras and in the class of all monounary algebras.
[1] D. Duffus I. Rivаl: A structure theory for ordered sets. Discrete Math. 35 (1981), 53-118. DOI 10.1016/0012-365X(81)90201-6 | MR 0620665
[2] D. Jаkubíková-Studenovská: Retract irreduciblity of connected monounary algebras I. Czechoslovak Math. J. To appear. MR 1388617
[3] D. Jаkubíková-Studenovská: Retгact iгreduciblity of connected monounaгy algebras II. Czechoslovak Math. J. To appear.
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