In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2207 (NABLA).
See also#
\backslashbase\lnotbase\negbase
The ∇ symbol (Nabla, U+2207), written as \nabla in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+2207 (NABLA).
\backslash base\lnot base\neg base