Pair
A Set of two numbers or objects linked in some way is said to be a pair. The pair 
and 
is usuallydenoted (, ). In certain circumstances, pairs are also called Brothers or Twins.
- Polyiamond
- Polyking
- Polylogarithm
- Polymorph
- Polynomial
- Polynomial Bar Norm
- Polynomial Bracket Norm
- Polynomial Curve
- Polynomial Factor
- Polynomial Norm
- Polynomial Remainder Theorem
- Polynomial Ring
- Polynomial Root
- Polynomial Series
- Polyomino
- Polyomino Tiling
- Polyplet
- Polytope
- Poncelet's Closure Theorem
- Poncelet's Continuity Principle
- Poncelet-Steiner Theorem
- Poncelet's Theorem
- Poncelet Transform
- Poncelet Transverse
- Pong Hau K'i