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arXiv math/0501343math.QAmath.CT
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导Hall代数

Derived Hall Algebras

B. Toen

摘要:

本文的目的是定义一个与任意dg-范畴$T$(在某些有限性条件下)相关联的导出Hall代数$\mathcal{DH}(T)$.我们的主要定理指出,$\mathcal{DH}(T)$是结合和单位的。证明了当$T$是阿贝尔范畴时,$\mathcal{DH}(T)$包含通常的Hall代数$\mathcal{H}(T)$.我们还将证明一个明确的公式推导霍尔数纯粹的三角范畴相关的$T$的不变量。作为例子,我们描述了遗传阿贝尔范畴的导出Hall代数.

英文摘要:

The purpose of this work is to define a derived Hall algebra $\mathcal{DH}(T)$, associated to any dg-category $T$ (under some finiteness conditions). Our main theorem states that $\mathcal{DH}(T)$ is associative and unital. It is shown that $\mathcal{DH}(T)$ contains the usual Hall algebra $\mathcal{H}(T)$ when $T$ is an abelian category. We will also prove an explicit formula for the derived Hall numbers purely in terms of invariants of the triangulated category associated to $T$. As an example, we describe the derived Hall algebra of an hereditary abelian category.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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