Formulas
- List of numbers
- List of periodic functions
- List of prime numbers
- List of scientific constants named after people
- List of trigonometric identities
- Path integral formulation
- Pathwidth
- Patience sorting
- Pati–Salam model
- Pauli–Lubanski pseudovector
- Pearson correlation coefficient
- Peaucellier–Lipkin linkage
- Pell's equation
- Pencil (geometry)
- Pendulum