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Keywords:
monounary algebra; endomorphism; congruence; kernel
monounary algebra; endomorphism; congruence; kernel
Summary:
An algebra $\cal A$ is said to have the endomorphism kernel property (EKP) if every congruence on $\cal A$ is the kernel of some endomorphism of $\cal A$. Three classes of monounary algebras are dealt with. For these classes, all monounary algebras with EKP are described.
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