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Mat. Zametki, 2020 Volume 108, Issue 2, Pages 224–235 (Mi mzm12536)

Completely Decomposable Quotient Divisible Abelian Groups with Isomorphic Endomorphism Semigroups

O. V. Ljubimtsev

National Research Lobachevsky State University of Nizhny Novgorod

Abstract: Let $\Lambda$ be a class of Abelian groups. A group $A\in\Lambda$ is said to be determined by its endomorphism semigroup $E^\star(A)$ in the class $\Lambda$ if every isomorphism $E^\star(A)\cong E^\star(B)$, where $B\in\Lambda$, implies the isomorphism $A\cong B$. The paper describes those Abelian groups in the class $\mathscr Q\mathscr D_{\mathrm{cd}}$ of completely decomposable quotient divisible Abelian groups which are determined by their endomorphism semigroups in the class $\mathscr Q\mathscr D_{\mathrm{cd}}$.

Keywords: quotient divisible Abelian group, endomorphism semigroup.

UDC: 512.541

Received: 08.08.2019

DOI: 10.4213/mzm12536


 English version:
Mathematical Notes, 2020, 108:2, 209–218

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© Steklov Math. Inst. of RAS, 2025