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Results tagged with derived-categories
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user 461
For questions about the derived categories of various abelian categories and questions regarding the derived category construction itself.
2
votes
0
answers
101
views
Existence of a certain derived functor
This is a sequel to this question.
Let $k$ be a field, let $A$ be the $k$-algebra $k[\varepsilon]$ with $\varepsilon^2=0$, and consider the following three abelian categories:
$\bullet\ \text M(A)$ …
- 4,416
20
votes
1
answer
970
views
Example of an additive functor admitting no right derived functor
I asked the same question a week ago on Mathematics Stackexchange but got no answer.
What would be a simple example of an additive functor $F:\mathcal C\to\mathcal C'$ of abelian categories such that …
- 4,416