Mathematical symbols often used in latex

Add in the place where the LaTeX code loads the package

 \usepackage{
    
    amsmath} 

LaTeX symbol code	effect
\emptyset	∅
\in	∈
\notin	∉
\subset	⊂
\supset	⊃
\subseteq	⊈
\ nsupseteq	⊉
\sum	Σ
\bigcap	⋂
\bigcup	⋃
\ bigvee	⋁
\bigwedge	⋀

Show off	Cryptography
$\circ$	\circus