cyclic group

 https://www.youtube.com/watch?v=kFSF7E2wAZA

remote login ubuntu

https://www.makeuseof.com/tag/how-to-establish-simple-remote-desktop-access-between-ubuntu-and-windows/

 

Hp printer driver on Ubuntu

 https://www.cyberciti.biz/faq/how-to-install-networked-hp-printer-and-scanner-on-ubuntu-linux/

Install Ubuntu on Lenovo ideapad 100s

 https://forums.lenovo.com/t5/Ubuntu/How-to-load-Ubuntu-onto-a-Lenovo-Ideapad-100S-11IBY/m-p/3737789

等價關係

 等價關係

https://zh.wikipedia.org/wiki/%E7%AD%89%E4%BB%B7%E5%85%B3%E7%B3%BB#%E4%B8%8D%E6%98%AF%E7%AD%89%E4%BB%B7%E5%85%B3%E7%B3%BB%E7%9A%84%E5%85%B3%E7%B3%BB%E7%9A%84%E4%BE%8B%E5%AD%90

 

vim font size

 https://vim.fandom.com/wiki/Change_font

Latex

 ShareLatex (on line)

https://www.sharelatex.com/

The Not So Short Introduction to LATEX 2ε 

http://tug.ctan.org/info/lshort/english/lshort.pdf