+Convexity is a property of sets and functions where, for any two points, the line segment connecting them remains entirely within the set or above the function's graph. This characteristic is crucial in fields like [Optimization](/wiki/optimization) and [Machine Learning](/wiki/machine-learning), simplifying problems by ensuring that local minima are also global minima.
+## See also
+- [Convex Set](/wiki/convex-set)
+- [Convex Function](/wiki/convex-function)
+- [Convex Hull](/wiki/convex-hull)
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