DR-irreducibility of connected monounary algebras
Danica Jakubíková-Studenovská (2000)
Czechoslovak Mathematical Journal
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Danica Jakubíková-Studenovská (2000)
Czechoslovak Mathematical Journal
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Danica Jakubíková-Studenovská (2005)
Czechoslovak Mathematical Journal
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In this note we deal with a question concerning monounary algebras which is analogous to an open problem for partially ordered sets proposed by Duffus and Rival.
Danica Jakubíková-Studenovská (2000)
Czechoslovak Mathematical Journal
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Danica Jakubíková-Studenovská (1996)
Mathematica Bohemica
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Let be a connected monounary algebra. The paper deals with retract irreducibility of in the class of all connected monounary algebras and in the class of all monounary algebras.