Alexander Ideal
The order Ideal in 
, the Ring of integral Laurent Polynomials,associated with an Alexander Matrix for a Knot 
. Any generator of a principal Alexander ideal is calledan Alexander Polynomial. Because the Alexander Invariant of a Tame Knot in 
has aSquare presentation Matrix, its Alexander ideal is Principaland it has an Alexander Polynomial 
.
References
Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, pp. 206-207, 1976.
- Weyl's Criterion
- Weyl Tensor
- Weyrich's Formula
- W-Function
- Wheat and Chessboard Problem
- Wheel
- Wheel Graph
- Wheel Paradox
- Whewell Equation
- Whipple's Transformation
- Whirl
- Whisker Plot
- Whitehead Double
- Whitehead Link
- Whitehead Manifold
- Whitehead's Theorem
- Whitney-Graustein Theorem
- Whitney-Mikhlin Extension Constants
- Whitney Singularity
- Whitney Sum
- Whitney Umbrella
- Whittaker Differential Equation
- Whittaker Function
- Whole Number
- Width (Partial Order)