Published:
This is a brief introduction to installation and basic instructions of Ubuntu system. At the same time, it introduces the basic use of vim, replacing apt sources and using oh-my-zsh to beautify the command terminal.
Published:
This blog talks about mathematical understanding of the basic reproduction number $R_0$. $R_0$ is an important argument in viral transmission, such as COVID-19. We construct a math model and propose that $\Pr[\mathrm{Virus\ extinction}] = 1$ if $R_0<1$, and $\Pr[\mathrm{Virus\ extinction}] < 1$ if $R_0\geq 1$.