Philosophy

• Openness
  Openness
  Openness is the quality of being open. It sometimes refers to a very general philosophical position from which some individuals and organizations operate, often highlighted by a decision-making process recognizing communal management by distributed stakeholders rather than a centralized authority...
  
  , term being used to define the basis of how various groups and organizations operate

Mathematics

• Open problem
  Open problem
  In science and mathematics, an open problem or an open question is a known problem that can be accurately stated, and has not yet been solved . Some questions remain unanswered for centuries before solutions are found...
  
  , a well-defined problem with no known solution in science and mathematics
• Open set
  Open set
  The concept of an open set is fundamental to many areas of mathematics, especially point-set topology and metric topology. Intuitively speaking, a set U is open if any point x in U can be "moved" a small amount in any direction and still be in the set U...
  
  , set in topology and related fields of mathematics
• Opening (morphology)
  Opening (morphology)
  In mathematical morphology, opening is the dilation of the erosion of a set A by a structuring element B:A\circ B = \oplus B, \, where \ominus and \oplus denote erosion and dilation, respectively....
  
  , an operator in mathematical morphology
• Open map
  Open and closed maps
  In topology, an open map is a function between two topological spaces which maps open sets to open sets. That is, a function f : X → Y is open if for any open set U in X, the image f is open in Y. Likewise, a closed map is a function which maps closed sets to closed sets...
  
  , a function that is open

Music and media

• Open (Shaznay Lewis album), 2004 album by Shaznay Lewis
• Open (Blues Image album)
  Open (Blues Image album)
  Open is Blues Image's second album and most acclaimed album, which featured the #4 hit single, "Ride Captain Ride".-Track listing:All songs by Blues Image except where noted.#"Love Is The Answer" - 2:35#"Running the Water" - 2:37#"Clean Love" - 7:49...
  
  , Blues Image's second album
• Open (Cowboy Junkies album)
  Open (Cowboy Junkies album)
  Open is an album by the Canada band Cowboy Junkies, released in 2001.It was their third independent release after the end of their contract with Geffen Records, and the first of those to feature new material....
  
  , an album by the Canada band Cowboy Junkies, released in 2001
• Open (Gotthard album)
  Open (Gotthard album)
  Open is the fourth studio album released by the hard rock band Gotthard.-Track listing:All songs written by Steve Lee/Leo Leoni/Chris von Rohr except where noted.# "Free and Alive" – 4:23# "Vision" – 3:57...
  
  , the fourth studio album by the hard rock band Gotthard
• Open (YFriday album), the second studio album from the Christian band yFrida, released in 2001
• Open, 1967 album by Julie Driscoll
  Julie Driscoll
  Julie Tippetts is an English singer and actress, known for her 1960s versions of Bob Dylan's "This Wheel's on Fire", and Donovan's "Season of the Witch", both with Brian Auger & The Trinity...
  
  , Brian Auger
  Brian Auger
  Brian Auger is a jazz and rock keyboardist, who has specialized in playing the Hammond organ.A jazz pianist, bandleader, session musician and Hammond B3 player, Auger has played or toured with artists such as Rod Stewart, Tony Williams, Jimi Hendrix, Sonny Boy Williamson, Led Zeppelin, Eric Burdon...
  
   and the Trinity
• Open (band)
  Open (band)
  Open is an indie Australian Pop/rock band consisting of singer Gabrielle Rogers , guitarist Daniel Pugliese and drummer Pete Neville as well as Paul Bianco on live bass and Jak Housden on production.-Background:Drummer Pete Neville has been involved in the Sydney/Australian music scene...
  
  , Australian pop/rock band
• "Open", a song by The Cure on their album Wish
• Open Season (film)
  Open Season (film)
  Open Season is a 2006 computer-animated comedy film, written by Steve Bencich and Ron J. Friedman and directed by Jill Culton, Roger Allers, and Anthony Stacchi, and production designed by Michael Humphries...
  
  , a 2006 movie made in Sony Animation
• Open...., the original interactive television service on BSkyBs Sky Digital platform
• Open (Jon Anderson album)
  Open (Jon Anderson album)
  Open is an album released in 2011 by Jon Anderson, formerly of progressive rock band Yes.-About the album:Anderson began work on this album in the spring of 2010, when he began to lay down its foundation on his 19th Century guitar. From the start he knew that it would become a long form musical...
  
  , a 2011 album released through Digital Download

Language and literature

• Open vowel
  Open vowel
  An open vowel is defined as a vowel sound in which the tongue is positioned as far as possible from the roof of the mouth. Open vowels are sometimes also called low vowels in reference to the low position of the tongue...
  
  , vowel sound of a type used in most spoken languages
• Open (magazine)
  Open (magazine)
  Open is a monthly Mexican lifestyle magazine published by Editorial Metrosexual. Founded in 2005, the magazine covers different topics in each issue, such as art, cars, travel, restaurants, sex, gadgets and every other subject related to trendy men....
  
  , a lifestyle Mexican publication
• OPEN (Indian magazine), an Indian weekly English language magazine featuring current affairs
• Open: An Autobiography, by Andre Agassi
  Andre Agassi
  Andre Kirk Agassi is a retired American professional tennis player and former world no. 1. Generally considered by critics and fellow players to be one of the greatest tennis players of all time, Agassi has been called the best service returner in the history of the game...
  
   (2010)

Electronics and computer science

• open (process), Nextstep & Mac OS X command line application that opens its argument(s) in the GUI as if the user had double clicked
• Open-circuit voltage
  Open-circuit voltage
  Open-circuit voltage is the difference of electrical potential between two terminals of a device when there is no external load connected, i.e. the circuit is broken or open. Under these conditions there is no external electric current between the terminals, even though there may be current...
  
  , in electronics, the absence of a load through which electric current would flow
• Open-source software
  Open-source software
  Open-source software is computer software that is available in source code form: the source code and certain other rights normally reserved for copyright holders are provided under a software license that permits users to study, change, improve and at times also to distribute the software.Open...
  
  , computer software modifiable by all, where users are treated as co-developers
• Open system (computing)
  Open system (computing)
  Open systems are computer systems that provide some combination of interoperability, portability, and open software standards. The term was popularized in the early 1980s, mainly to describe systems based on Unix,...
  
  , computer systems that provide interoperability
• Open (system call)
  Open (system call)
  For most file systems, a program initializes access to a file in a filesystem using the open system call. This allocates resources associated to the file , and returns a handle that the process will use to refer to that file...
  
  , standardized system call for opening files

Other fields

• Open (sport)
  Open (sport)
  An Open in sports terminology refers to a sporting event or game tournament that is open to all people, regardless of their age, ability, gender, or other categorization. Opens are usually found in golf, tennis, quizbowl, snooker, darts, volleyball, ultimate, squash and chess....
  
  , type of competition in tennis, golf and other sports where entry is open to all qualifiers regardless of age or ability
• Organization of Pakistani Entrepreneurs of North America
  Organization of Pakistani Entrepreneurs of North America
  The Organization of Pakistani Entrepreneurs and Professionals is a not-for-profit organization, whose sole focus is the promotion of entrepreneurship and professional growth...
  
  , inclusive, not-for-profit organization
• Open surgery as opposed to minimally invasive surgery

See also

• Open-ended (disambiguation)
• Open mind (disambiguation)
• Open system (disambiguation)
• Open education
  Open education
  Not to be confused with Open educational resourcesOpen education is a collective term that refers to educational organizations that seek to eliminate barriers to entry. Such institutions, for example, would not have academic admission requirements. Such universities include Open University in...
  
  
• Opening (disambiguation)
• Close (disambiguation)