Formulas
- Toronto function
- Total derivative
- Itô isometry
- John ellipsoid
- Jordan operator algebra
- Jorge Luis Borges and mathematics
- Jucys–Murphy element
- Milliken's tree theorem
- KK-theory
- Milman's reverse Brunn–Minkowski inequality
- Kachurovskii's theorem
- Milnor's sphere
- Kac–Moody algebra
- Milnor K-theory
- Kadison transitivity theorem