Author： Jakubíková-Studenovská Danica
Publisher： Springer Publishing Company
ISSN： 0011-4642
Source： Czechoslovak Mathematical Journal, Vol.57, Iss.3, 2007-09, pp. : 975-986
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Abstract
The term “Retract Theorem” has been applied in literature in connection with group theory. In the present paper we prove that the Retract Theorem is valid (i) for each finite structure, and (ii) for each monounary algebra. On the other hand, we show that this theorem fails to be valid, in general, for algebras of the form
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