Abstract
We study cyclic elements of order n of GMV-algebras. The existence of cyclic elements is equivalent to the condition that a given GMV-algebra contains a copy of the MV-algebra Gamma(Z, n). Using cyclic elements, we describe necessary conditions which guarantee the existence of a greatest subalgebra belonging to the variety generated by Gamma(Z, n). This is true, e. g. for representable GMV-algebras. Finally, we use cyclic elements to prove the existence of a free product in various varieties of GMV-algebras.
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