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- W4285695966 abstract "Homological properties of quotient divisible Abelian groups are studied. These groups form an important class of groups, which has been extensively studied in recent years. The first part of the paper is devoted to conditions for the triviality of extension groups in which one of the arguments is a quotient divisible group. Under certain additional assumptions, groups of homomorphisms from quotient divisible groups to reduced Abelian groups are described. Universality properties of quotient divisible Abelian groups are investigated. The second part of the paper considers homological properties of compact Abelian groups dual to quotient divisible groups in the sense of L.S. Pontryagin. Such groups are said to be “quotient toroidal.” Conditions for the triviality of group extensions in which one of the arguments is a quotient toroidal group are studied. Certain groups of continuous homomorphisms in which the second argument is a quotient toroidal group are described. The last part of the paper is devoted to conditions for the triviality of the groups of extensions of quotient divisible groups by compact quotient toroidal ones. The fundamental group of the topological space of a quotient toroidal group is characterized." @default.
- W4285695966 created "2022-07-18" @default.
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- W4285695966 date "2020-04-01" @default.
- W4285695966 modified "2023-09-27" @default.
- W4285695966 title "Homological Properties of Quotient Divisible Abelian Groups and Compact Groups Dual to Them" @default.
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- W4285695966 doi "https://doi.org/10.1134/s1063454120020090" @default.
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