Generator

Generator may refer to:

Mathematics

Computing

Generator (category theory)

In category theory in mathematics a family of generators (or family of separators) of a category is a collection of objects, indexed by some set I, such that for any two morphisms in , if then there is some i∈I and morphism , such that the compositions . If the family consists of a single object G, we say it is a generator (or separator).

Generators are central to the definition of Grothendieck categories.

The dual concept is called a cogenerator or coseparator.

Examples

In the category of abelian groups, the group of integers is a generator: If f and g are different, then there is an element , such that . Hence the map suffices.

References

Generator (Foo Fighters song)

"Generator" is a Foo Fighters song, released as a single in 2000 from their third album There Is Nothing Left to Lose. The single was only released in Australia and also released as a limited edition single in Europe.

The song is particularly unique among the band's work because of Dave Grohl's implementation of the talk box in parts of the song. The usage of the device was partly inspired by Grohl's admiration of Peter Frampton and Joe Walsh, both of whom helped popularize it in the 1970s.

Track listing

Australian CD

(The EP also contains an enhanced segment containing exclusive documentary footage and photos)

European CD

(This version was available for only 1 week between March 6 and March 12, 2000, each CD was a limited, numbered edition and at the end of the week of release all remaining stock was deleted. As well as the music tracks it also included a multimedia 'enhanced' segment containing exclusive documentary footage and photos)

Hydro (fuel-station chain)

Hydro was a chain of fuel stations throughout Sweden owned by Statoil. The chain had more than 500 stations, as well as some unmanned Uno-X stations. The company also operated in retailing natural gas, electricity and heating oil.

History

The Hydro chain was created in the late 1980s when Norsk Hydro bought the Mobil stations in Norway, Sweden and Denmark to transform itself to a vertically integrated petroleum company. The stations were rebranded Hydro in all three countries. In 1995 the Norwegian and Danish stations were converted to Hydro Texaco when Hydro merged its stations in the two countries with Texaco's stations. In 2007 the ownership of Hydro was transferred to StatoilHydro when Norsk Hydro's oil and gas division merged with Statoil. When StatoilHydro was renamed Statoil in November 2009, the use of the Hydro-brand was discontinued and ownership of the Hydro filling stations was transferred to St1.

References

External links

List of Marvel Comics characters: H

Haazareth Three

The Haazareth Three debuted in Fantastic Four Vol 3 #69 (2003). They operate out of the hellish realm ruled by Mephisto. They are a trio of demons with whom Doctor Doom made a pact (seen in the Unthinkable story arc). They made a deal with Doom; if he sacrifices something of irreplaceable value, they would provide him with the magical powers he would have possessed if he had chosen to devote his life to studying magic over science. Doom does, killing his childhood sweetheart, Valeria. The demons come through with the deal.

Hack

Hack is a mutant whose first appearance was in Excalibur vol. 2 #2. He was one of the few survivors after Cassandra Nova programmed her Wild Sentinels to decimate the island nation of Genosha, killing over 16 million mutants. He found other survivors and allied himself with Unus the Untouchable and his gang. He was a very valuable asset on the island since all forms of electronic communication were eradicated or made useless by the resulting electro-magnetic damage. Inside of the gang, he became close friends with Hub and the two of them began to doubt if Unus' exclusive, clique-like strategy was the best way. Hack was gifted with a finely tuned form of telepathy that allowed him to "hack" into almost any mind.

Jay Lethal

Jamar "Jay" Shipman (born April 29, 1985), better known by the ring name Jay Lethal, is an American professional wrestler currently signed to ROH.He is a former ROH World Champion. He was also a record-setting two-time and longest reigning ROH World Television Champion holding the title for 567 days and the first man to hold the TV title concurrently with the World title. Lethal is also known for working for Total Nonstop Action Wrestling (TNA), where he was a six-time X Division Champion and a one-time World Tag Team Champion with Consequences Creed. Between ROH and TNA, Lethal has won 11 total championships.

Early life

Jamar Shipman was born to Ronald and Shirley Shipman on April 29, 1985, in Elizabeth, New Jersey and is the middle child of three brothers and two sisters. On July 7, 2001, at age sixteen, Shipman entered a contest held by Jersey All Pro Wrestling (JAPW) which entitled the winner to six months free training in the JAPW professional wrestling school. Shipman won, and spent half a year training, at the end of which the JAPW school closed down. Shipman then began training under Extreme Championship Wrestling (ECW) alum Mikey Whipwreck and Dan Maff.