Using unicode symbols.
ex) a→𝑎.
If you use "(Greek Alphabet Name)", that Greek alphabet will be out.
ex) \epsilon → 𝜀, \Omega → 𝛺.
Some half-width symbols will be changed to full-width.
+, -, = → +, -, =
Some LaTeX expressions used.
\times
\devide
\pm
\cap
\cup
\subset
\in
\leq
\geq
\int
\iint
\infty
^\circ = \degree
\circ
\square
\triangle
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