Photo adapted from Science Ink by Carl Zimmer © 2011 Sterling Publishing Co. Inc.
Melissa Schumacher’s tattoo of Cantor’s theorem written in Frege’s notation. Schumacher, a third-year grad student at MIT says, "When I look down on my arm, [there are] two lines of symbols, if I turn it over there’s a heart. What my tattoo says is if Cantor’s theorem, then love. It’s a necessary truth for me."