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arXiv 1612.03083math.QA
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内连通图与Kashiwara-Vergne李代数

Internally connected graphs and the Kashiwara-Vergne Lie algebra

Matteo Felder

摘要:

证明了Kashiwara-Vergne李代数$\widehat{\mathfrak{krv}}_2$同构于Grothendieck-Teichmüller李代数$\mathfrak{grt}_1$与一维李代数的直和.利用内连通图的图复形定义了$\widehat{\mathfrak{krv}}_2$的一个交为$\mathfrak{grt}_1$的李子代数嵌套序列,从而给出了这两个李代数之间的插值方法.

英文摘要:

It is conjectured that the Kashiwara-Vergne Lie algebra $\widehat{\mathfrak{krv}}_2$ is isomorphic to the direct sum of the Grothendieck-Teichmüller Lie algebra $\mathfrak{grt}_1$ and a one-dimensional Lie algebra. In this paper, we use the graph complex of internally connected graphs to define a nested sequence of Lie subalgebras of $\widehat{\mathfrak{krv}}_2$ whose intersection is $\mathfrak{grt}_1$, thus giving a way to interpolate between these two Lie algebras.

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