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.
- 666
- 72 Rule
- AAA Theorem
- AAS Theorem
- Abacus
- abc Conjecture
- Abelian
- Abelian Category
- Abelian Differential
- Abelian Function
- Abelian Group
- Abelian Integral
- Abelian Variety
- Abel's Curve Theorem
- Abel's Functional Equation
- Abel's Identity
- Abel's Impossibility Theorem
- Abel's Inequality
- Abel's Irreducibility Theorem
- Abel's Lemma
- Abel's Test
- Abel's Theorem
- Abel's Uniform Convergence Test
- Abel Transform
- Abhyankar's Conjecture