Convex

Convex means curving out or extending outward (compare concave).
Convex or convexity may refer to:

Mathematics

Convex set, a set of points containing all line segments between each pair of its points
Convex function, a function whose epigraph forms a convex set
Convex polytope, a polytope that forms a convex set
Convex hull, the minimal convex set containing a set of points X
Convex combination, a linear combination of points with non-negative coefficients that sum up to 1
Convex conjugate, a generalization of the Legendre transformation
Convex bipartite graph
Convex polygon
Convex plane graph, a plane graph with convex faces
Convex optimization, a subfield of optimization, studies the problem of minimizing convex functions
Convex geometry, the branch of geometry studying convex sets, mainly in Euclidean space
- Convex curve, the boundary of a convex set
- Convex body, a compact convex set with non-empty interior

Convexity (finance), second derivatives in financial modeling generally
Bond convexity, a measure of the sensitivity of the duration (not price) of a bond to changes in interest rates

Convex lens, a lens with surfaces that curve outward
Convex Computer, a company that produced a number of vector supercomputers
Convex Software Library, a client-side open source solution for Internet Explorer