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ЖУРНАЛЫ // Algebra and Discrete Mathematics // Архив

Algebra Discrete Math., 2015, том 20, выпуск 2, страницы 182–202 (Mi adm539)

RESEARCH ARTICLE

On strongly almost $m$-$\omega_1$-$p^{\omega+n}$-projective abelian $p$-groups

P. Danchev

Mathematical Department, Plovdiv University "Paisii Hilendarski"

Аннотация: For any non-negative integers $m$ and $n$ we define the class of strongly almost $m$-$\omega_1$-$p^{\omega+n}$-projective groups which properly encompasses the classes of strongly $m$-$\omega_1$-$p^{\omega+n}$-projective groups and strongly almost $\omega_1$-$p^{\omega+n}$-projective groups, defined by the author in Demonstr. Math. (2014) and Hacettepe J. Math. Stat. (2015), respectively. Certain results about this new group class are proved as well as it is shown that it shares many analogous basic properties as those of the aforementioned two group classes.

Ключевые слова: almost $p^{\omega+n}$-projective groups, almost $\omega_1$-$p^{\omega+n}$-projective groups, strongly almost $\omega_1$-$p^{\omega+n}$-projective groups, countable subgroups, nice subgroups, Ulm subgroups, Ulm factors.

MSC: 20K10

Поступила в редакцию: 13.09.2013
Исправленный вариант: 12.10.2015

Язык публикации: английский



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