Linking Number
A Link invariant. Given a two-component oriented Link, take the sum of 
crossings and 
crossingover all crossings between the two links and divide by 2. For components 
and 
,
where
is the set of crossings of with and 
is the sign of the crossing.The linking number of a splittable two-component link is always 0.See also Jones Polynomial, Link
References
Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, pp. 132-133, 1976.
- Principle
- Pringsheim's Theorem
- Printer's Errors
- Prior Distribution
- Prism
- Prismatic Ring
- Prismatoid
- Prismoid
- Prisoner's Dilemma
- Prizes
- Probability
- Probability Axioms
- Probability Density Function
- Probability Distribution Function
- Probability Function
- Probability Inequality
- Probability Integral
- Probability Measure
- Probability Space
- Probable Error
- Probable Prime
- Problem
- Procedure
- Proclus' Axiom
- Procrustian Stretch