Formulas
- Plateau's problem
- Plot (graphics)
- Plotkin bound
- Riemann–Roch theorem
- Point (geometry)
- Pointless topology
- Polar set
- Riemann–Roch theorem for smooth manifolds
- Riemann–Siegel theta function
- Riemann–Stieltjes integral
- Riemann–von Mangoldt formula
- Riesz function
- Riesz projector
- Right group
- Polarization of an algebraic form