Matrix

Matrix may refer to:

Science and mathematics

• Matrix (mathematics), a mathematical object generally represented as an array of numbers
  • Matrix calculus, a notation for calculus operations on matrix spaces
  • Identity matrix
  • Similarity matrix, which scores the similarity between two data points
  • A number of bioinformatic related matrices, including:
    • Position-specific scoring matrix, which represents a pattern or motif in biological sequences
    • Substitution matrix, which estimates the rate at which each possible residue in a biological sequence changes to each other residue over time
    • PAM matrix, or Point Accepted Mutation matrix, used in scoring sequence alignments
    • BLOSUM (BLOcks of Amino Acid SUbstitution Matrix), also used in scoring sequence alignments
• Matrix (biology), with numerous meanings, often referring to a biological material where specialized structures are formed or embedded
  • Extracellular matrix, any material part of a tissue that is not part of any cell
  • Mitochondrial matrix, the inner part of a mitochondrion, where the Krebs cycle takes place
  • Osteon or bone matrix, a form of connective tissue found in bone
  • Nuclear matrix, an insoluble fraction of the cell nucleus
  • Germinal matrix, an embryonic brain tissue
  • Matrix, another term for a bacterial growth medium
• Matrix (archeology), the soil or sediment surrounding a dig site
  • Harris matrix, an archaeological tool used to describe sediment deposition over time
• Matrix (chemical analysis), the discarded portion of a sample used for chemical analysis
• Matrix (geology), the fine grains between larger grains in igneous or sedimentary rocks, or the rock material in which a fossil, gem etc. is embedded
• Matrix isolation, a continuous solid phase in which particles (precipitates, etc.) are embedded
• Metal matrix composite, a type of composite material

Technology

• Multistate Anti-Terrorism Information Exchange (MATRIX), a database of US Citizens
• Matrix (numismatics), an intermediate into which the design of a coin is engraved
• Matrix (printing), a mold for shaping the letters
• Dot matrix, a type of printer or display, usually of text
• Matrix decoder, a technology which allows a finite number of audio channels to be decoded to a greater amount of audio channels (i.e. Dolby or Quadraphonic)
• Matrix (or matrix master), a master disc used in the production of gramophone records
• Matrix Switch, a crossbar switch connecting multiple inputs to multiple outputs
• Keyboard matrix (music), a device which reduces the number of wires needed for a keyboard

Arts and entertainment

• Matrix (music), an element of variations which does not change, especially in folk and popular music
• Matrix (artist), a British DJ
• Matrix (jazz group), a jazz group established in 1974
• The Matrix (record production team) - A music production/songwriting team
• Alfa Matrix, a record label
• Matrix (Doctor Who), an advanced computer network and a virtual reality environment from the British television series Doctor Who
• Matrix (Doctor Who novel), a Doctor Who novel by Robert Perry and Mike Tucker
• M@rix (pronounced Matrix) the 1997 album by the German band P.A.L.
• The Matrix (franchise), a series of films, video games and comic books
  • The Matrix, a 1999 science fiction/action film
  • The Matrix Reloaded, a 2003 science fiction/action film, sequel to The Matrix
  • The Matrix Revolutions, a 2003 science fiction/action film, sequel to The Matrix Reloaded
  • The Matrix: Music from the Motion Picture, one of the two 1999 soundtrack albums from the film The Matrix
  • The Animatrix, a compilation of nine animated short films, based on The Matrix series
• Matrix (TV series), Canadian-produced fantasy/adventure series
• Matrix (club), a large music club which opened in 1996 in Berlin
• The Matrix (club), a historic San Francisco nightclub, open from 1965 to 1972
• The Matrix, nickname of American basketball player Shawn Marion
• The Matrix, nickname of Italian footballer Marco Materazzi
• John Matrix, Arnold Schwarzenegger's character in Commando
• Supergirl (Matrix), character appearing in DC Comics
• "Matrix", A track by Chick Corea, first recorded on his album Now He Sings, Now He Sobs
• Matrix of Leadership, an object owned by Autobot leaders in the Transformers Universe
• Matrix, the surname of two of the main characters in the CGI cartoon ReBoot
• Matrix, a term used in the 1984 science fiction novel Neuromancer to describe what is today referred to as virtual reality

Other

• Matrix management, an organizational management style
• Growth-share matrix, a Boston Consulting Group analysis technique for business strategy
• Matrix Season, a rugby union season
• Matrix sign, a variable-message sign on roads in the UK
• Matrix Chambers, a set of barristers' chambers in London
• Matrix Partners, a US based private equity investment firm
• Toyota Matrix
• Hyundai Matrix
• Matrix Business Technologies, a telecommunications company and internet service provider
• Matrix Software, a Japanese video game company founded in 1994
• MATRIX: Northern Ireland Science Industry Panel, a business-led expert panel

See also

• Array (disambiguation)
• Grid (disambiguation)