http://www.malinc.se/math/latex/basiccodeen.php
Latex symbol
https://de.wikipedia.org/wiki/Liste_mathematischer_Symbole
https://www.caam.rice.edu/~heinken/latex/symbols.pdf
https://fr.wikibooks.org/wiki/LaTeX/Math%C3%A9matiques
algorithm
https://en.wikibooks.org/wiki/LaTeX/Algorithms
Proposition
https://tex.stackexchange.com/questions/125981/proposition-command-doesnt-work
Lemma
https://tex.stackexchange.com/questions/126139/lemmas-and-sub-sections
importing jpg files into Latex
https://tex.stackexchange.com/questions/156081/importing-jpg-files-into-latex
latex 中文設定
陳鍾誠
http://ccckmit.wikidot.com/tex:chinese
min work example
| https://tex.meta.stackexchange.com/questions/228/ive-just-been-asked-to-write-a-minimal-working-example-mwe-what-is-that Sections and chapters - Overleaf, Online LaTeX Editor https://www.overleaf.com/learn/latex/sections_and_chapters |