[Tex/LaTex] Symbols for symmetric difference


I have the problem with a symbol for symmetric difference (see http://en.wikipedia.org/wiki/Symmetric_difference). In commonly used is


But in Polish tradition often is used:


and I would like to ask if it is possible to make dot be a little bit down to (close to) line (here where is the red dot).

enter image description here

Best Answer

I've shifted the dot down relative to \dot{-}. You may adjust the value of .2\LMex to suit.

EDITED to make it more robust and to achieve a more uniform vertical spacing at the smaller math styles.

\usepackage{scalerel}% IF YOU NEED IT FOR SCRIPTSTYLE MATH
\( A \symdif B \)
\(\scriptstyle A \symdif B \)
\(\scriptscriptstyle A \symdif B \)

enter image description here