In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2571 (BOX DRAWINGS LIGHT DIAGONAL UPPER RIGHT TO LOWER LEFT).
The ╱ symbol (Box drawings light diagonal upper right to lower left, U+2571), written as \diagup in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+2571 (BOX DRAWINGS LIGHT DIAGONAL UPPER RIGHT TO LOWER LEFT).