Markov chains on finite fields with deterministic jumps
Markov chains on finite fields with deterministic jumps
复制标题
具有确定性跳跃的有限域上的马尔可夫链
DOI:
10.1214/22-ejp757
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发表时间:
2020
影响因子:
1.4
通讯作者:
Jimmy He
中科院分区:
文献类型:
--
作者:
Jimmy He
We study the Markov chain on $\mathbf{F}_p$ obtained by applying a function $f$ and adding $\pm\gamma$ with equal probability. When $f$ is a linear function, this is the well-studied Chung--Diaconis--Graham process. We consider two cases: when $f$ is the extension of a rational function which is bijective, and when $f(x)=x^2$. In the latter case, the stationary distribution is not uniform and we characterize it when $p=3\pmod{4}$. In both cases, we give an almost linear bound on the mixing time, showing that the deterministic function dramatically speeds up mixing. The proofs involve establishing bounds on exponential sums over the union of short intervals.
影响因子:
2
作者:
S. Chatterjee;P. Diaconis
通讯作者:
S. Chatterjee;P. Diaconis
DOI:
10.1007/s00283-021-10058-w
发表时间:
2021
期刊:
The Mathematical Intelligencer
影响因子:
--
作者:
Diaconis, Persi;He, Jimmy;Martin Isaacs, I.
通讯作者:
Martin Isaacs, I.