I'm a mathematics professor. My research is in mathematical logic, somewhere between computability theory and proof theory.
If you would like to contact me, my email address is on my website, http://m6c.org.
Although I may not mention this preference very often in comments, I would personally appreciate editors using the correct capitalization and spacing of my name when they use it to draw my attention. So "@Carl Mummert", or "@Carl", but not "@CarlMummert". Thanks!