Alain Badiou (; French: [alɛ̃ badju] ; born 17 January 1937) is a French philosopher, formerly chair of Philosophy at the École normale supérieure (ENS) and founder of the faculty of Philosophy of the Université de Paris VIII with Gilles Deleuze, Michel Foucault and Jean-François Lyotard. Badiou's work is heavily informed by philosophical applications of mathematics, in particular set theory and category theory.
https://en.wikipedia.org/wiki/Alain_Badiou