Ajit Pai @AjitPai
Happy Integral Day! It was on this date in 1675 that German mathematician Gottfried Leibniz first wrote in an unpublished manuscript the symbol that current and former calculus students know well. A real differentiator in Leibniz' legacy. https://t.co/NFlWmAw6AA https://t.co/uOO4jAp3PW — PolitiTweet.org