In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+03A3 (GREEK CAPITAL LETTER SIGMA).
\SigmaSymbol
The Σ symbol (Greek capital letter sigma, U+03A3), written as \Sigma in LaTeX math mode.
The Σ symbol (Greek capital letter sigma, U+03A3), written as \Sigma in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+03A3 (GREEK CAPITAL LETTER SIGMA).