Genus (Curve)
One of the Plücker Characteristics, defined by
where
is the class, 
the order, 
the number of nodes, 
the number of Cusps, 
the number of stationary tangents (Inflection Points), and 
the number of Bitangents.See also Riemann Curve Theorem
References
Coolidge, J. L. A Treatise on Algebraic Plane Curves. New York: Dover, p. 100, 1959.
- Well-Defined
- Well-Ordered Set
- Well-Ordering Principle
- Werner Formulas
- 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