Geodesic
On endomorphism semigroup of connected monounary algebras with one-element cycle
Čebyševskij sbornik, Tome 14 (2013) no. 4, pp. 188-195.

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In this paper we consider the inverse problem. Our goal is to describe classes of semigroups which is isomorphic to the endomorphism semigroup of some monounary algebra. We describe the endomorphism semigroup for certain class of monounary algebras with an one-element cycle.
Keywords: unar, endomorphism, wreath product of semigroups. 
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S. V. Sirovatskaya. On endomorphism semigroup of connected monounary algebras with one-element cycle. Čebyševskij sbornik, Tome 14 (2013) no. 4, pp. 188-195. http://geodesic.mathdoc.fr/item/CHEB_2013_14_4_a16/

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