Gauss–Seidel iterative method
, it uses the iterative relation 
, so it uses the new values immediately they are available, unlike the Jacobi method.
- outer product
- outlier
- output
- p
- P
- p-adic numbers
- pair
- paired-sample tests
- pairwise
- pairwise disjoint
- Pappus' Hexagon Theorem
- Pappus of Alexandria
- parabola
- parabolic coordinates
- parabolic cylinder
- parabolic partial differential equation
- parabolic spiral
- paraboloid
- paradox
- parallel
- parallel axis theorem
- parallel computation
- parallelepiped
- parallelogram
- parallelogram law