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Results tagged with torsion-theory
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user 18756
For questions about torsion theories in abelian categories and related concepts.
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Torsion pairs and projective dimension
In this answer I freely use results and notation from the book you refer to. Let me know if I need to fill in more details.
Let $U=\operatorname{Ext}^1_A(T,N)$. We can assume $\operatorname{pd}_B (U) …
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