Statistical analysis on Amida-kuji

Amida-kuji is a Japanese traditional lottery. Amida-kuji is a simple network lottery which consists of vertical lines and horizontal lines. Japanese use Amida-kuji to divide people into several groups, to pick up a lucky guy from many people for cleanup duty, and so on. In this paper, we briefly explain about Amida-kuji, and then we give a new insight about Amida-kuji that is the probability distribution function (PDF) for positions on the Amida-kuji network obeying Fokker–Planck equation in one-dimensional diffusion process.