A curve which has at least multiplicity at each point where a given curve (having only ordinary singular points and cusps) has a multiplicity is called the adjoint to the given curve. When the adjoint curve is of order , it is called a special adjoint curve.

# Adjoint Curve

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## References

Coolidge, J. L.*A Treatise on Algebraic Plane Curves.*New York: Dover, p. 30, 1959.

## Referenced on Wolfram|Alpha

Adjoint Curve## Cite this as:

Weisstein, Eric W. "Adjoint Curve." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/AdjointCurve.html