In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+03A8 (GREEK CAPITAL LETTER PSI).
The Ψ symbol (Greek capital letter psi, U+03A8), written as \bfbbPsi in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+03A8 (GREEK CAPITAL LETTER PSI).