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Fundamentalnaya i Prikladnaya Matematika, 2002, Volume 8, Issue 2, Pages 407–473
(Mi fpm652)
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This article is cited in 15 scientific papers (total in 15 papers)
Fully invariant subgroups of Abelian groups and full transitivity
S. Ya. Grinshpon Tomsk State University
Abstract:
An Abelian group $A$ is said to be fully transitive if for any elements $a,b\in A$ with $\mathbb H(a)\leqslant\mathbb H(b)$ ($\mathbb H(a)$, $\mathbb H(b)$ are the height-matrices of elements $a$ and $b$) there exists an endomorphism of $A$ sending $a$ into $b$. We say that an Abelian group $A$ is $\mathbb H$-group if any fully invariant subgroup $S$ of $A$ has the form $S=\{a\in A\mid\mathbb H(a)\geqslant M\}$, where $M$ is some $\omega\times\omega$-matrix with ordinal numbers and symbol $\infty$ for entries. The description of fully transitive groups and $\mathbb H$-groups in various classes of Abelian groups is obtained. The results of this paper show that every $\mathbb H$-group is a fully transitive group, but there are fully transitive torsion free groups and mixed groups, which are not $\mathbb H$-groups. The full description of fully invariant subgroups and their lattice for fully transitive groups in various classes of Abelian groups is obtained.
Received: 01.04.1999
Citation:
S. Ya. Grinshpon, “Fully invariant subgroups of Abelian groups and full transitivity”, Fundam. Prikl. Mat., 8:2 (2002), 407–473
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Abstract page: | 503 | Full-text PDF : | 164 | References: | 57 | First page: | 2 |
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