A set (pitch set, pitch-class set, set class, set form, set genus, pitch collection) in music theory, as in mathematics and general parlance, is a collection of objects. In musical contexts the term is traditionally applied most often to collections of pitches or pitch-classes, but theorists have extended its use to other types of musical entities, so that one may speak of sets of durations or timbres, for example.
A set by itself does not necessarily possess any additional structure, such as an ordering. Nevertheless, it is often musically important to consider sets that are equipped with an order relation (called segments); in such contexts, bare sets are often referred to as "unordered", for the sake of emphasis.
Two-element sets are called dyads, three-element sets trichords (occasionally "triads", though this is easily confused with the traditional meaning of the word triad). Sets of higher cardinalities are called tetrachords (or tetrads), pentachords (or pentads), hexachords (or hexads), heptachords (heptads or, sometimes, mixing Latin and Greek roots, "septachords"—e.g.,), octachords (octads), nonachords (nonads), decachords (decads), undecachords, and, finally, the dodecachord.
Set construction is the process by which a construction manager undertakes to build full scale scenery suitable for viewing by camera, as specified by a production designer or art director working in collaboration with the director of a production to create a set for a theatrical, film or television production. The set designer produces a scale model, scale drawings, paint elevations (a scale painting supplied to the scenic painter of each element that requires painting), and research about props, textures, and so on. Scale drawings typically include a groundplan, elevation, and section of the complete set, as well as more detailed drawings of individual scenic elements which, in theatrical productions, may be static, flown, or built onto scenery wagons. Models and paint elevations are frequently hand-produced, though in recent years, many Production Designers and most commercial theatres have begun producing scale drawings with the aid of computer drafting programs such as AutoCAD or Vectorworks.
In computing, associative containers refer to a group of class templates in the standard library of the C++ programming language that implement ordered associative arrays. Being templates, they can be used to store arbitrary elements, such as integers or custom classes. The following containers are defined in the current revision of the C++ standard: set
, map
, multiset
, multimap
. Each of these containers differ only on constraints placed on their elements.
The associative containers are similar to the unordered associative containers in C++ standard library, the only difference is that the unordered associative containers, as their name implies, do not order their elements.
map
and set
each key must be unique. multimap
and multiset
do not have this restriction.map
and multimap
each element is composed from a key and a mapped value. In set
and multiset
each element is key; there are no mapped values.Power! (known as Critical Mass in Europe) is a computer game developed by Simon Francis in 1985 for the Amstrad CPC, Commodore 64 and ZX Spectrum.
The player operates a rocket-powered hovercraft whose mission is to destroy an enemy transfer beam that is protected not only by long-distance enemy raiders and mines, but also molecular disorientation that sucks the energy from the player's attack craft.
The player may control the hovercraft in either a normal joystick operational mode or with vectored movement. When the player pushes forward on the joystick, the hovercraft accelerates, and when pulling back on the joystick, speed decreases.
In 1988, Dragon reviewed Power!, and gave the game 4 out of 5 stars.
Power is a light rail station in Salt Lake City, Utah, served by the Green Line of the Utah Transit Authority's (UTA) TRAX system. The Green Line provides service from the Salt Lake City International Airport to West Valley City (via Downtown Salt Lake City), and connects with the rest of the TRAX system, as well as UTA's FrontRunner commuter rail and S Line streetcar.
The station is located at 1480 West North Temple Street, with the island platform in the median of the street. The Rocky Mountain Power facility is located just south of the station. Unlike many TRAX stations, Power does not have a Park and Ride lot. Like many other UTA stations, this station has art work included in its design. The art work for the Power station includes benches designed to resemble wind turbines. The combined work is called The Power Station and was designed by Darl Thomas of Salt Lake City. The station is part of a railway right of way that was created specifically for the Green Line. The station opened on April 14, 2013, and is operated by the Utah Transit Authority. It is also one of four TRAX stations (all of which are located the north end of the Green Line) that is powered by solar panels located on top of the station's canopy through a project which was initially funded in part by Rocky Mountain Power.
In Magic: The Gathering, Power Nine is a set of nine cards that were only printed early in the game's history, consisting of Black Lotus,Ancestral Recall, Time Walk, Mox Pearl, Mox Sapphire, Mox Jet, Mox Ruby, Mox Emerald, and Timetwister.
The Power Nine are considered to be among the most powerful cards in the game. All nine cards were of the rarest level of rarity and printed only in the Alpha, Beta, and Unlimited sets, meaning they were only printed from late 1993 to early 1994. Currently, all of the Power Nine cards are restricted in the Vintage tournament format and banned in Legacy, the only tournament formats where they would be legal otherwise, and all except for Timetwister are banned in the casual Commander format.
The "Black Lotus" card can be played at zero cost, and grants three mana (the game's primary resource) when sacrificed (discarded from play). Thus, the card gives the player an enormous jump in the early stages of a Magic game. Former Pro player and Magic writer Zvi Mowshowitz has declared Black Lotus as the best card of its type of all time, claiming every deck in the history of the game is better with a Black Lotus in it. It has since been banned from all official tournament styles save for Vintage, but even there, it is limited to one copy per deck, compared to the normal allowance of four. The illustration on Black Lotus was painted by Christopher Rush, who was at the time a Wizards of the Coast employee. The Black Lotus illustration is a depiction of a black lotus flower over a foliage backdrop.