- pinned Brownian motion
- Pinney, E.J.
- Pinsker, A.G.(Пинскер, А.Г.)
- Pinsker, M.S.(Пинскер, М.С.)
- Pinsker partition
- p-integrable function
- P-integral
- p-integral basis
- p-invariant
- pip
- pi-prime
- piriform
- PI-ring
- PIR (= principal ideal ring)
- pi-separable group
- pi-solvable group
- Pisot, Ch.
- Pisot constant
- Pisot number
- Pisot sequence
- Pisot-Vijayaraghavan constant
- pi-squared
- pi-system
- pitch
- Pitcher, E.