Linked from
The 12 pages that link to Carathéodory's theorem, each with the reason it gives.
Convex setRelated: It limits how many points are needed to witness membership in a convex hull.
Convex hullRelated: It limits how many original points are needed to represent any hull point.
Convex geometryRelated: It bounds how many points are needed to represent a point in a convex hull.
Convex combinationRelated: It limits the number of nonzero weights needed in a convex combination.
Helly's theoremRelated: It shares the dimension threshold and underlies related convexity arguments.