These are things named after Élie Cartan (9 April 1869 – 6 May 1951), a French mathematician. * * Cartan connection, Cartan connection applications * Cartan's criterion * Cartan's equivalence method * Cartan formalism (physics) * Cartan involution * Cartan's magic formula * Cartan matrix * Cartan subalgebra * Cartan subgroup * Cartan's theorem, a name for the closed-subgroup theorem * Cartan's theorem, a name for the theorem on highest weights * Cartan's theorem, a name for Lie's third theorem * Einstein–Cartan theory * Cartan–Ambrose–Hicks theorem * Cartan–Brauer–Hua theorem * Cartan–Dieudonné theorem * Cartan–Hadamard theorem * * Cartan–Kähler theorem * Cartan–Karlhede algorithm * Cartan–Kuranishi prolongation theorem * CAT(k) space * Maurer–Cartan form * Newto