AIExplainer
Machine Learning Intermediate 2 min read

What is convex set?

A set of points where any line segment connecting two points in the set lies entirely within the set

A convex set is a collection of points that has the property that the line segment between any two points in the set is also entirely contained within the set. This means that if you pick any two points in the set and draw a line between them, the entire line will be inside the set.

Imagine a piece of paper with a convex shape cut out of it, like a circle or an ellipse. If you draw a line between any two points on the edge of the shape, the line will always stay within the shape. This is similar to how a convex set works in mathematics.

A simple example of a convex set is a circular room. If you pick any two points in the room and draw a line between them, the line will always be inside the room. This property makes convex sets useful in applications like robotics, where you need to navigate around obstacles.

Convex sets are used in many areas of mathematics, including geometry, optimization, and machine learning. They are particularly useful in problems where you need to find the minimum or maximum of a function, or where you need to make decisions based on geometric shapes.

One common misconception about convex sets is that they must be symmetric or have a specific shape. However, a convex set can have any shape, as long as it satisfies the property that the line segment between any two points is entirely contained within the set.

The concept of convex sets has been around for centuries, with early mathematicians like Euclid and Archimedes studying the properties of convex shapes. However, the modern definition and theory of convex sets were developed in the 20th century by mathematicians like Hermann Minkowski and Constantin Caratheodory.

convex region convex domain

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