Completely decomposable direct summands of torsion--free abelian groups of finite rank
| Autor: | Mader, Adolf, Schultz, Phill |
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| Rok vydání: | 2017 |
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| Druh dokumentu: | Working Paper |
| Popis: | Let $A$ be a finite rank torsion--free abelian group. Then there exist direct decompositions $A=B\oplus C$ where $B$ is completely decomposable and $C$ has no rank 1 direct summand. In such a decomposition $B$ is unique up to isomorphism and $C$ unique up to near-isomorphism. Comment: 6 pages |
| Databáze: | arXiv |
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