Petechiae
发表于 2025-3-28 17:01:53
A Combinatorial Theorem and Endomorphism Rings of Abelian Groups II,978-3-7091-4536-4
按时间顺序
发表于 2025-3-28 18:53:31
,Essentially C-indecomposable pω+n-Projective p-Groups,978-3-642-79390-5
安抚
发表于 2025-3-28 22:57:26
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敏捷
发表于 2025-3-29 06:03:55
The Divisible and E-Injective Hulls of a Torsion Free Group,978-3-0348-6862-4
chronicle
发表于 2025-3-29 09:09:38
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急性
发表于 2025-3-29 15:06:06
https://doi.org/10.1007/978-3-658-06957-5ential homomorphisms only for any i ≠ j ∈ p. Naturally, we want ρ to be as large as possible which is ρ = 2. . In all “classical cases” we derived ρ = 2. , but it would be much nicer to obtain ρ = 2. without any restrictions as assumed in , Theorem 5.2(b). The following theorem will settle this problem which will be our main result.
Baffle
发表于 2025-3-29 17:44:02
,7. Kapitel Völkerschlachtdenkmal,tion 3.5] to arbitrary homogeneous groups by showing that a homogeneous torsionfree group is Butler if and only if it is completely decomposable. The main tool in this direction is a slight modification of Griffith’s proof of the freeness of Baer’s
adduction
发表于 2025-3-29 20:01:31
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禁令
发表于 2025-3-30 03:28:27
https://doi.org/10.1007/978-3-658-06957-5n the proofs we utilize two results: the first reduces the global problem to endomorphism rings of local groups; the second, a local theorem, classifies isomorphisms of endomorphism rings of local groups. The bulk of the proofs are then devoted to relating such isomorphisms to p-indicators.
REIGN
发表于 2025-3-30 06:54:42
https://doi.org/10.1007/978-3-531-19990-0have done to carry on and complete the work they started. Moreover, it may be beneficial for us to examine methods and techniques that have developed over this period and to analyse those in current use. Finally, we consider a few open problems and discuss briefly directions for future research.