Rave

A rave (from the verb: to rave) is a large dance party featuring performances by DJs and occasionally live performers playing electronic music, particularly electronic dance music (EDM). The music is amplified with a large, powerful sound reinforcement system, typically with large subwoofers to produce a deep bass sound. The music is accompanied by laser light shows, projected images, visual effects and fog machines. The word "rave" was first used in the late 1980s to describe the subculture that grew out of the acid house movement.

While some raves may be small parties held at nightclubs or private residences, some raves have grown to immense size, such as the Castlemorton Common Festival in 1992. Some electronic dance music festivals have features of raves, but on a large, often commercial scale. Raves may last for a long time, with some events continuing for ten hours. Due to the association of illegal party drugs such as MDMA (ecstasy) and the use of non-authorized, secret venues for some raves, such as squat parties at warehouses, law enforcement attention has been directed at the rave scene in many countries.

Rave (magazine)

Rave is an Indian music magazine, launched in March 2002. It was modeled on Rolling Stones magazine. The magazine is published by Soul City Publications ten times per year. In 2004 the US edition began to be published. Its online edition was started in August 2007.

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Rave (disambiguation)

Rave is a kind of dance party..

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Logic

Logic (from the Ancient Greek: λογική, logike) is the branch of philosophy concerned with the use and study of valid reasoning. The study of logic also features prominently in mathematics and computer science.

Logic was studied in several ancient civilizations, including Greece, India, and China. In the West, logic was established as a formal discipline by Aristotle, who gave it a fundamental place in philosophy. The study of logic was part of the classical trivium, which also included grammar and rhetoric. Logic was further extended by Al-Farabi who categorized it into two separate groups (idea and proof). Later, Avicenna revived the study of logic and developed relationship between temporalis and the implication. In the East, logic was developed by Hindus, Buddhists and Jains.

Logic is often divided into three parts: inductive reasoning, abductive reasoning, and deductive reasoning.

The study of logic

The concept of logical form is central to logic. The validity of an argument is determined by its logical form, not by its content. Traditional Aristotelian syllogistic logic and modern symbolic logic are examples of formal logic.

Ω-logic

In set theory, Ω-logic is an infinitary logic and deductive system proposed by W. Hugh Woodin (1999) as part of an attempt to generalize the theory of determinacy of pointclasses to cover the structure . Just as the axiom of projective determinacy yields a canonical theory of , he sought to find axioms that would give a canonical theory for the larger structure. The theory he developed involves a controversial argument that the continuum hypothesis is false.

Woodin's Ω-conjecture asserts that if there is a proper class of Woodin cardinals (for technical reasons, most results in the theory are most easily stated under this assumption), then Ω-logic satisfies an analogue of the completeness theorem. From this conjecture, it can be shown that, if there is any single axiom which is comprehensive over (in Ω-logic), it must imply that the continuum is not . Woodin also isolated a specific axiom, a variation of Martin's maximum, which states that any Ω-consistent (over ) sentence is true; this axiom implies that the continuum is .

Logic (disambiguation)

Logic may refer to:

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