arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2108.04299math.ATmath.COmath.PR
收藏

随机旗复形同调的单侧锐阈值

One-sided sharp thresholds for homology of random flag complexes

Andrew Newman

AI总结:

本文研究随机旗复形同调与基本群的概率阈值,证明存在同调不消失概率介于零与一之间的中间区间,并给出基本群为自由群的锐阈值新界,同时构造出基本群既非自由群也不具有 Kazhdan 性质 (T) 的概率区间。

摘要:

我们证明随机旗复形存在一个概率区间,其中同调不消失的概率渐近地既远离零也远离一。与这一主要结果相关,我们还建立了随机旗复形基本群为自由群的锐阈值的新界。在此过程中,我们证明存在一个中间概率区间,其中随机旗复形的基本群既不是自由群,也不具有 Kazhdan 性质 (T)。

英文摘要:

We prove that the random flag complex has a probability regime where the probability of nonvanishing homology is asymptotically bounded away from zero and away from one. Related to this main result we also establish new bounds on a sharp threshold for the fundamental group of a random flag complex to be a free group. In doing so we show that there is an intermediate probability regime in which the random flag complex has fundamental group which is neither free nor has Kazhdan's property (T).

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。

↑