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Results tagged with ra.rings-and-algebras
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user 19576
Non-commutative rings and algebras, non-associative algebras, universal algebra and lattice theory, linear algebra, semigroups. For questions specific to commutative algebra (that is, rings that are assumed both associative and commutative), rather use the tag ac.commutative-algebra.
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the quasi-isomorphisms are homotopic-equivalence for DGAS
I just want to know more explainations on this result. So, please let me know where I can find the original paper on this result. THANKS
- 77
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Question on an exercise on homological algebra?
Suppose $R$ has finite global dimension $n$, $N$ is a finitely generated module, $F$ is a free module, and $\operatorname{Ext}^n(N, F) \neq 0$. Then $\operatorname{Ext}^n(N, R)$ is also non-trivial.
N …
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