Look up vertex in Wiktionary, the free dictionary.

Vertex (Latin: corner; plural vertices or vertexes) may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ...

Mathematics

• Vertex (geometry), a corner point of a polygon, node in a Triangulated irregular network or TIN
• Vertex (graph theory), a node in a graph
• Vertex (curve), a local extreme point of curvature

In geometry, a vertex (plural vertices) is a special kind of point, usually a corner of a polygon, polyhedron, or higher dimensional polytope. ... This article just presents the basic definitions. ... A ellipse (red) and its evolute (blue), the dots are the vertices of the curve, each vertex corresponds to a cusp on the evolute. ...

Physics

• Vertex (physics), a point where particles collide and interact
• Vertex (optics), a point where the optical axis crosses a lens surface
• Vertex algebra in conformal field theory
• Vertex function describing the interaction between a photon and an electron
• Vertex model in statistical mechanics, a discrete model of a physical system in which weights are associated with vertices of a grid graph.

In mathematics, a vertex algebra is a (complex) vector space with a linear map and a vacuum vector satisfying: where the binomials above are expanded as formal power series using the binomial expansion convention: where Equivalently: See also: Vertex operator algebra. ... In quantum electrodynamics, the vertex function is the one particle irreducible correlation function involving ψ, and the vector potential A. It is unfortunate that the effective action Γeff and the vertex function Γμ happen to be described by the same letter. ...

Companies

• Vertex - Business Process Outsourcing, a business services provider spun off from United Utilities
• Vertex Pharmaceuticals, a biotech company
• Vertex Standard, a radiocommunication products company.

Vertex is a UK provider of outsourced business services and technology solutions with expertise in customer management. ... Vertex Pharmaceuticals is a biotechnology company with activities spanning the length of the pharmaceutical product pipeline, from target identification through to clinical trials and marketing. ... It has been suggested that Yaesu FRG-7, Yaesu ft-107m, Yaesu FT-847, Yaesu VX-7R, and others be merged into this article or section. ...

Music

• A song in In The Groove (video game)
• Vertex (album), an album by Buck 65
• Vertex (band), a band formed in 1996

In the Groove (abbreviated ITG) is the first game in the In the Groove franchise, published and developed by Roxor Games, and first released in video arcades around August 30, 2004. ... Vertex is an album from Halifax, Nova Scotia hip hop artist Richard Terfry, who performs as Buck 65. ... Vertex were a band featuring singer Stephen Pearcy and guitarist Al Pitrelli. ...

Other

• Vertex (anatomy), the uppermost surface of the head of an arthropod or vertebrate

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