I
Webpages concerning "I"
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Wikipedia-Article "I"
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- Due to MediaWiki's uppercase algorithm, ı (lower case dotless i) will bring you here.
I is the ninth letter in the Latin alphabet.
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History
The letter I derived from the Greek iota (Ι, ι). It stood for the vowel /i/, the same as in the Old Italic alphabet. In Latin (as in Modern Greek) /j/ (as English Y in YOKE) was added. In Semitic, /j/ was the usual sound value of Jôd (probably originally a pictogram for an arm with hand), /i/ only in foreign words.
In English, I represents different sounds, among them a diphthong that developed from /i:/ as well as short, open /I/ as in BILL. The dot over the lowercase 'i' is called a tittle. In the Turkish alphabet, dotted and dotless I are considered separate letters and both have uppercase (I, İ) and lowercase (ı, i) forms.
Alternative representations
India represents the letter I in the NATO phonetic alphabet.
In international Morse code the letter I is DitDit: · ·
In Braille the letter I is represented as ⠊ (in Unicode), the dot pattern,
. . ..
Computing
In Unicode the capital I is codepoint U+0049 and the lowercase i is U+0069.
The ASCII code for capital I is 73 and for lowercase i is 105; or in binary 01001001 and 01101001, correspondingly.
The EBCDIC code for capital I is 201 and for lowercase i is 137.
The numeric character references in HTML and XML are "I" and "i" for upper and lower case respectively.
Meanings for I
- In biochemistry, I is the symbol for isoleucine.
- In chemistry, I is the symbol for iodine.
- In computing,
<i>is the deprecated HTML tag for marking italic type. It is also commonly used as the name of the index variable in for loops when no other name suggests itself. - In English, I is the nominative case of the pronoun denoting the first person, singular. See Wiktionary:I.
- In international licence plate codes, I stands for Italy.
- In mathematics,
- i denotes the imaginary unit, a complex number whose square is equal to −1.
- I denotes the closed unit interval, which contains all real numbers from 0 to 1, inclusive
- I denotes the identity matrix.
- i is commonly used as an index variable to coordinate vectors or matrices. It is written as a subscript after the indexed element. When used with matrices, it usually indexes rows, in which case columns are usually indexed by j.
- In physics and electronic engineering, I is often the variable for electric current. Sometimes both I and i are used for static and small signal respecively. Therefore the imaginary unit is represented by j instead.
- In radiocommunication, I is the ITU prefix allocated to Italy.
- In Roman numerals, I denotes the number 1 (there are also separate Unicode characters for this number, 0x2160 "Ⅰ" and 0x2170 "ⅰ").
- In structural engineering I is used for the moment of inertia
- In music,
- the Roman numeral I is the tonic scale degree, chord, or diatonic function, when distinguished I = major and i = minor.
- I is the name of the winner of the Norwegian version of Pop Idol and also World Idol, Kurt Nilsen's debut album. See I (album).
- i is the name of the most recent album by The Magnetic Fields.
- i is the name of a Portuguese post-rock band
- I is the name of a song and EP by Swedish Tech metal band, Meshuggah.
- In economics, I is usually used to represent investment.
- In television, i is the television network formerly known as PAX
See also
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