U (disambiguation)
Encyclopedia
U
is the twenty-first letter of the Latin alphabet.
U may also refer to:
U
U is the twenty-first letter and a vowel in the basic modern Latin alphabet.-History:The letter U ultimately comes from the Semitic letter Waw by way of the letter Y. See the letter Y for details....
is the twenty-first letter of the Latin alphabet.
U may also refer to:
Mathematics
-
, union (set theory)Union (set theory)In set theory, the union of a collection of sets is the set of all distinct elements in the collection. The union of a collection of sets S_1, S_2, S_3, \dots , S_n\,\! gives a set S_1 \cup S_2 \cup S_3 \cup \dots \cup S_n.- Definition :... - U-set, a set of uniquenessSet of uniquenessIn mathematics, a set of uniqueness is a concept relevant to trigonometric expansions which are not necessarily Fourier series. Their study is a relatively pure branch of harmonic analysis.- Definition :...
- U, the unitary groupUnitary groupIn mathematics, the unitary group of degree n, denoted U, is the group of n×n unitary matrices, with the group operation that of matrix multiplication. The unitary group is a subgroup of the general linear group GL...
Chemistry
- UraniumUraniumUranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...
, a metallic chemical element - Unified atomic mass unit, used to express atomic and molecular masses
Astronomy
- U, ultraviolet magnitude, in a UBV photometric systemUBV photometric systemUBV photometric system, also called the Johnson system , is a wide band photometric system for classifying stars according to their colors. It is the first known standardized photoelectric photometric system. The letters U, B, and V stand for ultraviolet, blue, and visual magnitudes, which are...
- U, an October 16 through 31 discovery in the provisional designation of a comet
Computing
-
denoting underlined text - U, measurement of size of a rack unitRack unitA rack unit or U is a unit of measure used to describe the height of equipment intended for mounting in a 19-inch rack or a 23-inch rack...
- U, Universal Turing machineUniversal Turing machineIn computer science, a universal Turing machine is a Turing machine that can simulate an arbitrary Turing machine on arbitrary input. The universal machine essentially achieves this by reading both the description of the machine to be simulated as well as the input thereof from its own tape. Alan...
Other scientific uses
- U, a common notation for Potential energyPotential energyIn physics, potential energy is the energy stored in a body or in a system due to its position in a force field or due to its configuration. The SI unit of measure for energy and work is the Joule...
. - U, the middle of an edge joining a hexagonal and a square face of the Brillouin zoneBrillouin zoneIn mathematics and solid state physics, the first Brillouin zone is a uniquely defined primitive cell in reciprocal space. The boundaries of this cell are given by planes related to points on the reciprocal lattice. It is found by the same method as for the Wigner–Seitz cell in the Bravais lattice...
of a face-centered cubic lattice, in solid-state physics - U, one of the two subcarrier-modulated color-difference channels in the YUVYUVYUV is a color space typically used as part of a color image pipeline. It encodes a color image or video taking human perception into account, allowing reduced bandwidth for chrominance components, thereby typically enabling transmission errors or compression artifacts to be more efficiently...
colorspace, in video - U, the recommended symbol for a system's internal energyInternal energyIn thermodynamics, the internal energy is the total energy contained by a thermodynamic system. It is the energy needed to create the system, but excludes the energy to displace the system's surroundings, any energy associated with a move as a whole, or due to external force fields. Internal...
, in thermodynamics - U, the enzyme unitEnzyme unitThe enzyme unit is a unit for the amount of a particular enzyme.One U is defined as the amount of the enzyme that catalyzes the conversion of 1 micro mole of substrate per minute...
- u, the alternative abbreviation for the SI prefix "micro-" when the Greek letter mu (µ) is not available
Music
- U (musical instrument) The Japanese name for the yu (竽; pinyin: yú), a free reed wind instrument imported from ancient China.
- "U" (Super Junior song)U (Super Junior song)"U" is the first official CD single by Super Junior. The single topped CD sales charts during the first several weeks after its release on June 7, 2006. "U" peaked at #1 on the monthly MIAK K-pop album charts and sold 91,416 copies by 2008...
, released in 2006 - U (album)U (album)-Charts:AlbumBillboard -External links:*]]...
, a double album by the Incredible String Band, released in 1970 - ’u’’u’’u’ is the first opera in the Klingon language, billed as "The first authentic Klingon opera on Earth". It was composed by Eef van Breen to a libretto by Kees Ligtelijn and Marc Okrand under the artistic direction of Floris Schönfeld...
, EarthEarthEarth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
's first KlingonKlingonKlingons are a fictional warrior race in the Star Trek universe.Klingons are recurring villains in the 1960s television show Star Trek: The Original Series, and have appeared in all five spin-off series and eight feature films...
OperaOperaOpera is an art form in which singers and musicians perform a dramatic work combining text and musical score, usually in a theatrical setting. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance...
, debuted at the Zeebelt Theater in The HagueThe HagueThe Hague is the capital city of the province of South Holland in the Netherlands. With a population of 500,000 inhabitants , it is the third largest city of the Netherlands, after Amsterdam and Rotterdam...
on September 10, 2010 (the title means universe) - U, a solo Japanese music artist, also known to be the lead vocals of FuntaFuntais a Japanese pop rock band consisting of two members: on vocals and on guitar and bass. Active since 1997, Funta have not released any full-length albums to date, focusing instead on releasing singles for use as theme songs in anime....
- U, the stage name of the solo Japanese music artist Yuu Shirota
- "U", a song by Pearl JamPearl JamPearl Jam is an American rock band that formed in Seattle, Washington, in 1990. Since its inception, the band's line-up has included Eddie Vedder , Jeff Ament , Stone Gossard , and Mike McCready...
on their 1998 album YieldYield (album)Yield is the fifth studio album by the American alternative rock band Pearl Jam, released on February 3, 1998. Following a short tour for its previous album, No Code , Pearl Jam went into the studio in 1997 to record its follow-up... - "U", a song by S.E.S.S.E.S. (band)S.E.S. , was a popular pop girl group that signed with SM Entertainment. Lasting from 1997 to 2002, they were viewed as the female version of H.O.T., another SM group who also enjoyed phenomenal popularity during the same years.S.E.S. was the first highly successful female K-pop group...
, released in 2002
People
- Woo Jang-choonWoo Jang-choonWoo Jang-choon was a Korean-Japanese agricultural scientist and botanist famous for breeding plants. He preferred U and published his paper with this family name....
(in the Revised Romanization of KoreanRevised Romanization of KoreanThe Revised Romanization of Korean is the official Korean language romanization system in South Korea proclaimed by Ministry of Culture, Sports and Tourism, replacing the older McCune–Reischauer system...
, U Jangchun) (1898-1959), agricultural scientist and botanist - U ThantU ThantU Thant was a Burmese diplomat and the third Secretary-General of the United Nations, from 1961 to 1971. He was chosen for the post when his predecessor, Dag Hammarskjöld, died in September 1961....
(1909-1974), Secretary General of the United NationsUnited NationsThe United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...
1961-71 - U NuU NuFor other people with the Burmese name Nu, see Nu .U Nu was a leading Burmese nationalist and political figure of the 20th century...
(1907-1995), first Prime Minister of Burma 1948-56, 1957-58 and 1960-62
Education
- UniversityUniversityA university is an institution of higher education and research, which grants academic degrees in a variety of subjects. A university is an organisation that provides both undergraduate education and postgraduate education...
, commonly abbreviated "U" - U, an unsatisfactory gradeGrade (education)Grades are standardized measurements of varying levels of comprehension within a subject area. Grades can be assigned in letters , as a range , as a number out of a possible total , as descriptors , in percentages, or, as is common in some post-secondary...
, or 'Unclassified' (UK) - The U, University of MiamiUniversity of MiamiThe University of Miami is a private, non-sectarian university founded in 1925 with its main campus in Coral Gables, Florida, a medical campus in Miami city proper at Civic Center, and an oceanographic research facility on Virginia Key., the university currently enrolls 15,629 students in 12...
, and/or Miami Hurricanes footballMiami Hurricanes footballThe Miami Hurricanes football program competes in the Atlantic Coast Conference of the NCAA's Division I Football Bowl Subdivision for the University of Miami. The program began in 1926 and has won five AP national championships...
Language
- U (Language), a language spoken by about 40,000 people in the Yunnan Province of China
- U (kana)U (kana)う in hiragana or ウ in katakana is one of the Japanese kana, each of which represents one mora. In the modern Japanese system of alphabetical order, they occupy the third place in the modern Gojūon system of collating kana. In the Iroha, they occupied the 24th position, between む and ゐ...
, a Japanese syllabary symbol - U and non-U EnglishU and non-U EnglishU and non-U English usage, with U standing for upper class, and non-U representing the aspiring middle classes, were part of the terminology of popular discourse of social dialects in 1950s Britain and New England. The debate did not concern itself with the speech of the working classes, which in...
, classes of language usage - u, a symbol for "you" in computer chats
- u, a polite way of saying "you" in the Dutch language
- U-, a prefix used for German submarineSubmarineA submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...
s during World War II - u-, a prefix in Zulu language
- UBurmese nameBurmese names lack the serial quality of most modern names. The Burmese people have no customary patronymic or matronymic system and thus there is no surname at all. In Burmese culture, people can change their name at will, often with no government oversight, to reflect a change in the course of...
, an title roughly equal to "Mister" in BurmeseBurmese languageThe Burmese language is the official language of Burma. Although the constitution officially recognizes it as the Myanmar language, most English speakers continue to refer to the language as Burmese. Burmese is the native language of the Bamar and related sub-ethnic groups of the Bamar, as well as...
Other uses
- U, a place in PanamaPanamaPanama , officially the Republic of Panama , is the southernmost country of Central America. Situated on the isthmus connecting North and South America, it is bordered by Costa Rica to the northwest, Colombia to the southeast, the Caribbean Sea to the north and the Pacific Ocean to the south. The...
- U, PohnpeiU, PohnpeiU is one of the administrative divisions of Pohnpei State, Federated States of Micronesia.-Description:U is one of the six municipalities located in the main island of Pohnpei. It corresponds to the northeastern sector of the island. U had 2,289 inhabitants according to the 2008 census.Alohkapw is...
, Federated States of Micronesia - U of GoryeoU of GoryeoU of Goryeo ruled Goryeo from 1374 until 1388.-Cultural background:In the thirteenth century, Mongol forces had advanced into China, and established the Yuan Dynasty in 1271...
(1363–89), king of Goryeo (Korea), often called King Woo - U MobileU MobileU Mobile Sdn Bhd is Malaysia’s newest 3G service provider and was founded in 1998 as MiTV Networks Sdn Bhd. U Mobile is a wholly owned subsidiary of U Television Sdn Bhd which was formerly known as U Telecom Media Holdings Sdn Bhd and MiTV Corporation Sdn Bhd....
, Malaysian mobile phone and data service provider - U-bend, a U-shaped plumbing trap
- Ü-TsangÜ-TsangÜ-Tsang , or Tsang-Ü, is one of the three traditional provinces of Tibet, the other two being Amdo and Kham. Geographically Ü-Tsang covered the central and western portions of the Tibetan cultural area, including the Tsang-po watershed, the western districts surrounding and extending past Mount...
, one of three historical provinces of TibetTibetTibet is a plateau region in Asia, north-east of the Himalayas. It is the traditional homeland of the Tibetan people as well as some other ethnic groups such as Monpas, Qiang, and Lhobas, and is now also inhabited by considerable numbers of Han and Hui people...
- Ü (region)Ü (region)Ü is a geographic division and a historical region in Tibet. Together with Tsang , it forms Central Tibet Ü-Tsang , which is one of the three Tibetan regions or cholka . The other two cholka are Kham and Amdo...
a particular region of Ü-Tsang, (U inside a circle) - hechsherHechsherA hechsher is the special certification marking found on the packages of products that have been certified as kosher . In Halakha , the dietary laws of kashrut specify food items that may be eaten and others that are prohibited as set out in the commandments of the Torah...
or kosher certification by the Orthodox UnionOrthodox UnionThe Union of Orthodox Jewish Congregations of America , more popularly known as the Orthodox Union , is one of the oldest Orthodox Jewish organizations in the United States. It is best known for its kosher food preparation supervision service...
- Ü (region)
- U, symbol for UstašeUstašeThe Ustaša - Croatian Revolutionary Movement was a Croatian fascist anti-Yugoslav separatist movement. The ideology of the movement was a blend of fascism, Nazism, and Croatian nationalism. The Ustaše supported the creation of a Greater Croatia that would span to the River Drina and to the border...
Croatian movement - Nickname for football teams:
- La U or Universitario de DeportesUniversitario de DeportesClub Universitario de Deportes, also known as Universitario, or more popularly as [La] "U", is a Peruvian football club located in Lima. It is the most successful football club in Peru. The club was founded in 1924 under the name Federación Universitaria by students of the National University of...
, Peru - Universitatea Cluj, Romania
- La U or Universitario de Deportes
- U (film)U (film)U is a 2006 French animated film directed by Serge Élissalde and Grégoire Solotareff. It was at the 2007 Seattle International Film Festival.-External links:*...
, a 2006 French animated feature film directed by Serge Elissalde and Grégoire Solotareff - U (Universal), a film rating used by:
- British Board of Film ClassificationBritish Board of Film ClassificationThe British Board of Film Classification , originally British Board of Film Censors, is a non-governmental organisation, funded by the film industry and responsible for the national classification of films within the United Kingdom...
- Central Board of Film CertificationCentral Board of Film CertificationThe Central Board of Film Certification is a Government of India regulatory body and censorship board of India controlled by Ministry of Information and Broadcasting. It reviews, rates and censors motion pictures, television shows, television ads, and promotional material...
in India
- British Board of Film Classification
- U, the color blue in Magic: The GatheringMagic: The GatheringMagic: The Gathering , also known as Magic, is the first collectible trading card game created by mathematics professor Richard Garfield and introduced in 1993 by Wizards of the Coast. Magic continues to thrive, with approximately twelve million players as of 2011...
- U (TV programme), a television programme to be aired by Television New Zealand