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Torsion free abelian
groups quasi-projective over their endomorphism rings. II
Charles Irvin Vinsonhaler |
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Vol. 74 (1978), No. 1, 261–265
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Abstract |
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Let R be a commutative ring with 1, and X an R-module. Then M = X ⊕ R is quasi-projective as an E-module, where E is either HomZ(M,M) or HomR(M,M). In this note it is shown that any torsion free abelian group G of finite rank, quasi-projective over its endomorphism ring, is quasi-isomorphic to X ⊕R, where R is a direct sum of Dedekind domains and X is an R-module. |
Mathematical Subject Classification 2000
Primary: 20K15
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Milestones
Received: 21 April 1977
Published: 1 January 1978
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Authors |
| Charles Irvin Vinsonhaler | |
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