J0 (other)
J0 may refer to: * j_0, Zeroth order Bessel function of the first kind * Yo (greeting), Yo, often written as j0 in Leet * J00 (other) See also

* JO (other) * 0J (other) {{Letter-NumberCombDisambig ...
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Bessel Function
Bessel functions, named after Friedrich Bessel who was the first to systematically study them in 1824, are canonical solutions of Bessel's differential equation x^2 \frac + x \frac + \left(x^2 - \alpha^2 \right)y = 0 for an arbitrary complex number \alpha, which represents the ''order'' of the Bessel function. Although \alpha and -\alpha produce the same differential equation, it is conventional to define different Bessel functions for these two values in such a way that the Bessel functions are mostly smooth functions of \alpha. The most important cases are when \alpha is an integer or half-integer. Bessel functions for integer \alpha are also known as cylinder functions or the cylindrical harmonics because they appear in the solution to Laplace's equation in cylindrical coordinates. Spherical Bessel functions with half-integer \alpha are obtained when solving the Helmholtz equation in spherical coordinates. Applications Bessel's equation arises when finding separa ...
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Yo (greeting)
''Yo'' is a slang interjection, commonly associated with North American English. It was popularized by the Italian-American community in Philadelphia, Pennsylvania, in the 1940s. Although often used as a greeting and often deployed at the beginning of a sentence, ''yo'' may also come at the end of a sentence and/or may be used to place emphasis on or to direct focus onto a particular individual, group, or issue at hand, or to gain the attention of another individual or group. It may also be used to express excitement, surprise, disbelief, enthusiasm, anger, or amazement. Etymology and history The interjection ''yo'' was first used in Middle English. In addition to ''yo'', it was also sometimes written ''io''. Though the term may have been in use in an isolated manner in different contexts earlier in English, its current usage and popularity derives from its use in Philadelphia's Italian American population in the twentieth century, which spread to other ethnic groups in th ...
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Leet
Leet (or "1337"), also known as eleet or leetspeak, or simply hacker speech, is a system of modified spellings used primarily on the Internet. It often uses character replacements in ways that play on the similarity of their glyphs via reflection or other resemblance. Additionally, it modifies certain words on the basis of a system of suffixes and alternative meanings. There are many dialects or linguistic varieties in different online communities. The term "leet" is derived from the word '' elite'', used as an adjective to describe skill or accomplishment, especially in the fields of online gaming and computer hacking. The leet lexicon includes spellings of the word as ''1337'' or ''leet''. History Leet originated within bulletin board systems (BBS) in the 1980s,Mitchell.An Explanation of l33t Speak. where having "elite" status on a BBS allowed a user access to file folders, games, and special chat rooms. The Cult of the Dead Cow hacker collective has been credited ...
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J00 (other)
J00 may refer to: * HMS Bangor (J00), a 1940 British Royal Navy minesweeper and also: * You, often written as joo or j00 in Leet * J00: Acute nasopharyngitis (common cold or rhinitis) ICD-10 ICD-10 is the 10th revision of the International Classification of Diseases (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, abnormal findings, complaints, social cir ...

JO (other)
Jo, jo, JO, or J.O. may refer to: Arts and entertainment * ''Jo'' (film), a 1972 French comedy * ''Jo'' (TV series), a French TV series *"Jo", a song by Goldfrapp from ''Tales of Us'' *"Jo", a song by Mr. Oizo from '' Lambs Anger'' * Jo a fictional character in the ''Star Wars'' franchise People * Jo (given name) * Jô, Brazilian footballer João Alves de Assis Silva (born 1987) * Josiel Alves de Oliveira (born 1988), Brazilian footballer also known as Jô * Jō (surname), a Japanese surname * Cho (Korean name), a common Korean surname which can be romanized as Jo Codes * JO, ISO 3166 country code for Jordan * .jo, the Internet country code top-level domain for Jordan * JO, IATA code for JALways, a subsidiary of Japan Airlines Other uses * '' jō'' (), a wooden staff used in some Japanese martial arts * ''jō'' (), a Japanese unit of length equivalent to the Chinese zhang * ''jō'' (), a Japanese unit of area corresponding to the area of a standard tatami mat (1×½ ke ...
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