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arXiv 0905.3827math.RAmath.KT
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Leavitt路代数上的模理论与$K$ -理论

Module theory over Leavitt path algebras and $K$-theory

Pere Ara, Miquel Brustenga

摘要:

设$k$是一个域,$E$是一个有限域。本文研究了Leavitt路代数$L_k (E)$上的有限长模的结构,并证明了它与$E$的逆模$\overline{E}$的有限维表示,以及它与生成的$P_k(E)$ -模类$M$的密切关系,使得对所有的$q$都有${\rm Tor}_q^{P_k (E)}(k^{|E^0|},M)=0$,其中$P_k(E)$是$E$的通常路代数.通过使用这些结果,我们计算冯诺依曼正则代数$Q_k (E)=L_k (E)Σ^{-1}$的更高的$K$ -理论,其中$Σ$是由增广映射$ε\colon P_k (E)\to k^{|E^0|}$发送到可逆矩阵的$P_k (E)$上的所有方阵的集合。

英文摘要:

Let $k$ be a field and let $E$ be a finite quiver. We study the structure of the finitely presented modules of finite length over the Leavitt path algebra $L_k (E)$ and show its close relationship with the finite-dimensional representations of the inverse quiver $\overline{E}$ of $E$, as well as with the class of finitely generated $P_k(E)$-modules $M$ such that ${\rm Tor}_q^{P_k (E)}(k^{|E^0|},M)=0$ for all $q$, where $P_k(E)$ is the usual path algebra of $E$. By using these results we compute the higher $K$-theory of the von Neumann regular algebra $Q_k (E)=L_k (E)Σ^{-1}$, where $Σ$ is the set of all square matrices over $P_k (E)$ which are sent to invertible matrices by the augmentation map $ε\colon P_k (E)\to k^{|E^0|}$.

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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