Areal Coordinates
Trilinear Coordinates normalized so that
When so normalized, they become the Areas of the Triangles
, 
, and
, where 
is the point whose coordinates have been specified.- Pseudoperfect Number
- Pseudoprime
- Pseudorandom Number
- Pseudorhombicuboctahedron
- Pseudoscalar
- Pseudosmarandache Function
- Pseudosphere
- Pseudosquare
- Pseudotensor
- Pseudovector
- Psi Function
- p-Signature
- PSLQ Algorithm
- PSOS Algorithm
- P-Symbol
- Ptolemy Inequality
- Ptolemy's Theorem
- Public-Key Cryptography
- Puiseaux's Theorem
- Pullback Map
- Pulse Function
- Purser's Theorem
- Pursuit Curve
- Push
- Puzzle