arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.05296math.DSmath.GT
收藏

时球作用的不变测度与Anosov群

Invariant measures for horospherical actions and Anosov groups

Minju Lee, Hee Oh

摘要:

设$Γ$是连通半单实代数群$G$的一个Zeromki稠密Anosov子群.对于$G$的极大次球面子群$N$,证明了$Γ\backslash G$上所有非平凡的$NM$不变遍历和$A$拟不变Radon测度空间在比例意义下同胚于${\mathbb R}^{\text{rank}\,G-1}$,其中$A$是极大实分裂环面,$M$是规范化$N$的极大紧子群.其中一个主要的成分是建立所有Burger-Roblin测度的$NM$ -遍历性。

英文摘要:

Let $Γ$ be a Zariski dense Anosov subgroup of a connected semisimple real algebraic group $G$. For a maximal horospherical subgroup $N$ of $G$, we show that the space of all non-trivial $NM$-invariant ergodic and $A$-quasi-invariant Radon measures on $Γ\backslash G$, up to proportionality, is homeomorphic to ${\mathbb R}^{\text{rank}\,G-1}$, where $A$ is a maximal real split torus and $M$ is a maximal compact subgroup which normalizes $N$. One of the main ingredients is to establish the $NM$-ergodicity of all Burger-Roblin measures.

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。

↑