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arXiv 0812.2519math.KTmath.AT
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导出Mackey函子

Derived Mackey functors

D. Kaledin

摘要:

对于有限群$G$,所谓的$G$-Mackey函子形成了一个阿贝尔范畴$M(G)$,它在研究$G$ -等变稳定同伦中有许多应用.人们会期望导出的范畴$D(M(G))$与$G$ -等变稳定同伦范畴的“同调”对应物同样重要。事实并非如此-- $D(M(G))$在很多方面都是病态的。我们提出并研究了$D(M(G))$的一个替代品,一个包含$M(G)$但不同于$D(M(G))$的“派生Mackey函子”的三角范畴$DM(G)$。我们证明了$G$ -等变稳定同伦范畴的标准特征,如两种类型的不动点函子与范畴$DM(G)$有精确的类似物。

英文摘要:

For a finite group $G$, the so-called $G$-Mackey functors form an abelian category $M(G)$ that has many applications in the study of $G$-equivariant stable homotopy. One would expect that the derived category $D(M(G))$ would be similarly important as the "homological" counterpart of the $G$-equivariant stable homotopy category. It turns out that this is not so -- $D(M(G))$ is pathological in many respects. We propose and study a replacement for $D(M(G))$, a certain triangulated category $DM(G)$ of "derived Mackey functors" that contains $M(G)$ but is different from $D(M(G))$. We show that standard features of the $G$-equivariant stable homotopy category such as the fixed points functors of two types have exact analogs for the category $DM(G)$.

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