Believe

Believe may refer to:

Film and television

Music

Albums

Believe (Elton John song)

"Believe" is a 1994 song recorded by Elton John. It was the first single from his album Made in England and was released on 20 February 1995. It reached #1 in Canada. In the US, "Believe" was Elton John's fifteenth number one on the Adult Contemporary chart and also went to number thirteen on the Billboard Hot 100. It gave him his third straight top twenty single in the US, with his two hit singles from Disney's The Lion King preceding it. In Europe, it was a top twenty hit in Switzerland, UK, France and Belgium (Wallonia) and achieved moderate success in several other countries. The songs which feature as B-side were recorded at the Greek Theatre, in Los Angeles.

The music video for the song was entirely in black-and-white and shot in London, featuring shots of the Believe Wall in the beginning and end of the video.

Track listings

Believe (Nami Tamaki song)

"Believe" is the debut single by Nami Tamaki, released April 23, 2003. Tamaki was chosen through a Sony Music audition as the vocalist for the song. This song was also used as the third opening theme for Kidou Senshi Gundam Seed.

Track listing

1. "Believe"

2. "Complete"

3. "Can You Feel My Love"

4. "Believe" (Instrumental)

Versions

Class (knowledge representation)

In knowledge representation, a class is a collection of individuals or objects. A class can be defined either by extension, or by intension, using what is called in some ontology languages like OWL. If we follow the Type–token distinction, the ontology is divided into individuals, who are real worlds objects, or events, and types, or classes, who are sets of real world objects. Class expressions or definitions gives the properties that the individuals must fulfill to be members of the class. Individuals that fulfill the property are called Instances.

Relationships

Instantiation

The instantiation relationship is a relation between objects and classes. We say that an object O, say Harry the eagle is an instance of a class, say Eagle. Harry the eagle has all the properties that we can attribute to an eagle, for example his parents were eagles, he's a bird, he's a meat eater and so on. It's a special kind of is a relationship. It's noted Concept assertion () in Description logics, a family of logic based on classes, class assertion

Doctor Who

Doctor Who is a British science-fiction television programme produced by the BBC from 1963 to the present day. The programme depicts the adventures of the Doctor, a Time Lord—a space and time-travelling humanoid alien. He explores the universe in his TARDIS, a sentient time-travelling space ship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Accompanied by companions, the Doctor combats a variety of foes, while working to save civilisations and help people in need.

The show is a significant part of British popular culture, and elsewhere it has become a cult television favourite. The show has influenced generations of British television professionals, many of whom grew up watching the series. The programme originally ran from 1963 to 1989. There was an unsuccessful attempt to revive regular production in 1996 with a backdoor pilot, in the form of a television film. The programme was relaunched in 2005 by Russell T Davies, who was showrunner and head writer for the first five years of its revival, produced in-house by BBC Wales in Cardiff. The first series of the 21st century featured Christopher Eccleston in the title role and was produced by the BBC. Series two and three had some development money contributed by the Canadian Broadcasting Corporation (CBC), which was credited as a co-producer.Doctor Who also spawned spin-offs in multiple media, including Torchwood (2006–2011) and The Sarah Jane Adventures (2007–2011), both created by Russell T Davies; K-9 (2009–2010); and a single pilot episode of K-9 and Company (1981). There also have been many spoofs and cultural references to the character in other media.

Class (set theory)

In set theory and its applications throughout mathematics, a class is a collection of sets (or sometimes other mathematical objects) that can be unambiguously defined by a property that all its members share. The precise definition of "class" depends on foundational context. In work on Zermelo–Fraenkel set theory, the notion of class is informal, whereas other set theories, such as Von Neumann–Bernays–Gödel set theory, axiomatize the notion of "proper class", e.g., as entities that are not members of another entity.

A class that is not a set (informally in Zermelo–Fraenkel) is called a proper class, and a class that is a set is sometimes called a small class. For instance, the class of all ordinal numbers, and the class of all sets, are proper classes in many formal systems.

Outside set theory, the word "class" is sometimes used synonymously with "set". This usage dates from a historical period where classes and sets were not distinguished as they are in modern set-theoretic terminology. Many discussions of "classes" in the 19th century and earlier are really referring to sets, or perhaps to a more ambiguous concept.