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arXiv 0810.1532math.RTmath.RA
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由$\mathfrak g$ -不变量的Koszul代数产生的关系的箭图

Quivers with relations arising from Koszul algebras of $\mathfrak g$-invariants

Jacob Greenstein

摘要:

设$\mathfrak g$是复单李代数,$Ψ$是正根的极值集.与$Ψ$相联系的是一个无限维Koszul代数$\bold S_Ψ^{\lie g}$,它是$((\bold V)^{op}\tensor S(\lie g))^{\lie g}$的局部有限部分的分次子代数,其中$\bold V$是所有有限维单$\lie g$ -模的直和.我们明确地描述了代数$\bold S_Ψ^{\lie g}$的结构,在一个无限的代数与$A$和$C$类型的$\lie g$的关系。我们还描述了几个无限家庭的箭图和有限维代数所产生的这种建设。

英文摘要:

Let $\mathfrak g$ be a complex simple Lie algebra and let $Ψ$ be an extremal set of positive roots. One associates with $Ψ$ an infinite dimensional Koszul algebra $\bold S_Ψ^{\lie g}$ which is a graded subalgebra of the locally finite part of $((\bold V)^{op}\tensor S(\lie g))^{\lie g}$, where $\bold V$ is the direct sum of all simple finite dimensional $\lie g$-modules. We describe the structure of the algebra $\bold S_Ψ^{\lie g}$ explicitly in terms of an infinite quiver with relations for $\lie g$ of types $A$ and $C$. We also describe several infinite families of quivers and finite dimensional algebras arising from this construction.

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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