Some people might want to ask questions about the Japanese words for mathematical symbols.
Can we allow the MathJax plugin on the Japanese stack exchange?
¿What word do Japanese mathematicians use for $\color{teal}{\text{sets}}$? do they use for collections, number sets or number containers?
\{1, 2, 3, 4, 5\} \cap \{4, 5, 6, 7\} = \{4, 5\}
$\{1, 2, 3\} \cup \{3, 4, 5\} = \{1, 2, 3, 4 , 5\}$
American mathematicians use the word $\color{teal}{\text{set}}$
More than forty different stack exchange forums allow people to write MathJax.
Therefore, the code implementing MathJax is already available and ready to use on stack exchange.
Most people can write Japanese and English without Mathjax, but some of us will ask questions about mathematics.