👉 Subconcavity is a mathematical concept in the field of topology and geometry that refers to the behavior of curves as they approach a point or a line. It describes how the curvature (or slope) changes near this point, indicating whether the curve is concave up or concave down at that point. In other words, subconcavity occurs when a curve approaches its endpoints or a line from the side in such a way that the curvature of the curve becomes less than zero. This property can be
