Dual curve

In mathematics, particularly in the fields of convex analysis and differential geometry, the term "dual curve" can refer to different concepts depending on the context in which it is used. Here are a few interpretations: 1. **Dual Curves in Projective Geometry**: In projective geometry, the duality principle states that points and lines can be interchanged. The dual curve of a given curve can be constructed where each point on the dual curve represents a line tangent to the original curve.