Zeuthen's Rule

On an Algebraic Curve, the sum of the number of coincidences at a noncuspidal point is the sum of the ordersof the infinitesimal distances from a nearby point to the corresponding points when the distance is taken as theprincipal infinitesimal.

References

Coolidge, J. L. A Treatise on Algebraic Plane Curves. New York: Dover, p. 131, 1959.

• Liouville Function
• Liouville Measure
• Liouville Number
• Liouville Polynomial Identity
• Liouville-Roth Constant
• Liouville's Boundedness Theorem
• Liouville's Conformality Theorem
• Liouville's Conic Theorem
• Liouville's Constant
• Liouville's Elliptic Function Theorem
• Liouville Space
• Liouville's Phase Space Theorem
• Liouville's Rational Approximation Theorem
• Liouville's Sphere-Preserving Theorem
• Lipschitz Condition
• Lipschitz Function
• Lipschitz's Integral
• Lissajous Curve
• Lissajous Figure
• List
• Lituus
• Lituus Inverse Curve
• LLL Algorithm
• Ln
• Lobachevsky-Bolyai-Gauss Geometry