2 papers
math.CO2019
The Construction of Two Kinds of Bijections in Simple Random Walk Paths
Sai Song, Qiang Yao
It is known that for the 2n-step symmetric simple random walk on Z, two events have the same probability if and only if their sets of paths have the same cardinality. In this artic…
math.PR2016
A new method for computing the expected hitting time between arbitrary different configurations of the multiple-urn Ehrenfest model
Sai Song, Qiang Yao
We study a multiple-urn version of the Ehrenfest model. In this setting, we denote the n urns by Urn 1 to Urn n, where n>=2. Initially, M balls are randomly placed in the n urns. A…