In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2199 (SOUTH WEST ARROW).
\to\rightarrow\longrightarrow\mapsto\xrightarrow\Rightarrow\Leftrightarrow\leftarrow\longmapsto\hookrightarrow\Longrightarrow\swarrow
\swarrowSymbol
The ↙ symbol (South west arrow, U+2199), written as \swarrow in LaTeX math mode.