- para-Fourier integral operators
- paralinearization
- parallactic angle
- parallactic inequality
- parallax
- parallel algorithm
- parallel algorithm analysis
- parallel angle in Lobachevskian geometry
- parallel axiom
- parallel-chord method
- parallel chords
- parallel circle
- parallel circles
- parallel circles of torus
- parallel combination of linear shift-invariant system
- parallel computing system
- parallel concepts
- parallel conical surface in Lobachevskian geometry
- parallel coordinate of a point
- parallel coordinate system
- parallel correction
- parallel curves
- parallel displacement
- parallel distance in Lobachevskian geometry
- parallelepiped