Teoría establecida Violar dañar latex can be used only in the preamble Todos los años Pisoteando Mañana
GitHub - SSoelvsten/latex-preamble-and-examples: A LaTeX preample for Computer Science handins and presentations (Danish and English) with reverse-engineerable examples
Automatic splitting of displayed equations using only commands in the preamble - TeX - LaTeX Stack Exchange
pdflatex - What is the cause of "Latex Error: The font size command /normalsize is not defined" - Stack Overflow