arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1502.05690math.DS
收藏

Bratteli图上的子图与不变测度

Subdiagrams and invariant measures on Bratteli diagrams

M. Adamska, S. Bezuglyi, O. Karpel, J. Kwiatkowski

摘要:

研究了Bratteli图$B$的道路空间$X_B$上定义的遍历有限测度和遍历无限测度,这些测度关于$X_B$上的尾等价关系是不变的.我们的兴趣集中在措施支持的顶点和边的子图的$B$。给出了定义在$B$的子图的道路空间上的有限不变测度扩张为$B$上的有限不变测度的几个判据.给出了Bratteli图$B$和$B$的子图$B'$上的有限遍历测度,得到了$B'$的道路空间$X_{B'}$的测度为正的充要条件.对于一类有限秩的Bratteli图,我们确定了它们何时具有最大可能遍历不变测度数.对秩为二的图的情形进行了全面的研究。我们还包括一个例子,明确说明了证明的结果。

英文摘要:

We study ergodic finite and infinite measures defined on the path space $X_B$ of a Bratteli diagram $B$ which are invariant with respect to the tail equivalence relation on $X_B$. Our interest is focused on measures supported by vertex and edge subdiagrams of $B$. We give several criteria when a finite invariant measure defined on the path space of a subdiagram of $B$ extends to a finite invariant measure on $B$. Given a finite ergodic measure on a Bratteli diagram $B$ and a subdiagram $B'$ of $B$, we find the necessary and sufficient conditions under which the measure of the path space $X_{B'}$ of $B'$ is positive. For a class of Bratteli diagrams of finite rank, we determine when they have maximal possible number of ergodic invariant measures. The case of diagrams of rank two is completely studied. We include also an example which explicitly illustrates the proved results.

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。

↑