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arXiv math/0503031math.GR
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准素阿贝尔群中大子群的特征性质

Characteristic properties of large subgroups in primary abelian groups

Peter V Danchev

摘要:

设$G$是一个具有固定大子群$L$的任意可加可写准素阿贝尔群.证明了$G$是(a)可和的;(b)$σ$ -可和的; \break是(c)$Σ$ -群的;(d)$p^{ω+1}$ -投射的仅当$L$是投射的.这些主张扩展了Benabdallah、Eisenstadt、Irwin和Poluianov,{ \it Acta Math.Acad. Sci. Hungaricae}(1970)和Khan,{ \it Proc. Indian Acad. Sci. A节}(1978年)。

英文摘要:

Suppose $G$ is an arbitrary additively written primary abelian group with a fixed large subgroup $L$. It is shown that $G$ is (a) summable; (b) $σ$-summable;\break (c) a $Σ$-group; (d) $p^{ω+1}$-projective only when so is $L$. These claims extend results of such a kind obtained by Benabdallah, Eisenstadt, Irwin and Poluianov, {\it Acta Math. Acad. Sci. Hungaricae} (1970) and Khan, {\it Proc. Indian Acad. Sci. Sect. A} (1978).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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