From Wikipedia, the free encyclopedia
"e-" redirects here. For the Internet-related prefix e-, see
wikt:e- .
Look up
E ,
e , or
è in Wiktionary, the free dictionary.
E is the fifth letter of the Latin alphabet.
E or e may also refer to:
Computing and computation
E (1970s text editor) , a text editor developed at the Stanford AI Lab in the 1970s
E (complexity) , a set of decision problems solvable by a Turing machine in a specific time
/e/ (operating system) , a fork of LineageOS, which in turn is based on Android
E (PC DOS) , a text editor
E (programming language) , an object-oriented programming language
E (theorem prover) , a modern, high performance prover for first-order logic
e (verification language) hardware verification language
Amiga E , a programming language
E or
Enlightenment (software) , a free software open source manager for X Window System
Commerce and transportation
€, the symbol for the
euro , the European Union's standard currency unit
℮, the
estimated sign , an EU symbol indicating that the weight or volume of pre-packaged goods is within specific allowable tolerances
E, the country identifier for
vehicle registration plates of Spain
E, a Polish electric locomotive in
PKP classification system
E or
Eni , an Italian oil and gas company
E-Mark, an approval mark for automotive products in Europe under the
World Forum for Harmonization of Vehicle Regulations
E (Los Angeles Railway)
E (New York City Subway service) , a subway service in New York
E Line (Los Angeles Metro)
Line E (Buenos Aires Underground) of the Buenos Aires Subte
RER E , a line in the RER of Paris
Toei Ōedo Line , a subway service operated by the Tokyo Metropolitan Bureau of Transportation (Toei), labeled
The official West Japan Railway Company service symbol for:
Geography
E or
east , one of the four cardinal directions
E (state) , a vassal state in Zhou Dynasty China (1046–256 BC)
E Township, Maine , an unincorporated community in USA
Mount E (Japanese: 恵山 , romanized: E-san ,
lit. 'Mount Wisdom'), a stratovolcano on Oshima Peninsula, Japan
River E , a river in Scotland
E postcode area , for east London
E,
New Brunswick 's postal code
Hubei , abbreviated in Chinese as È (鄂), a province of China
Languages
Letters and other characters
Ⓔ or ⓔ or (e) or (E) - circled-E or circled-E, see
Enclosed Alphanumerics
Latin E with diacritic:
É or é - e-acute , an accented letter of many Latin alphabets.
È or è - e-grave , another accented letter of many Latin alphabets
Ê or ê - e with circumflex
Ë or ë - e with trema (diaeresis or umlaut)
Ē or ē - e with macron
e, the
close-mid front unrounded vowel IPA symbol
Tifinagh letter
ⴹ
Е and
е , a letter of the Cyrillic alphabet
Ε and
ε , the letter epsilon in the Greek alphabet
Mathematics and logic
e (mathematical constant) , a mathematical constant also known as Euler's number and Napier's constant
E notation , or scientific notation, a way of writing very large and very small numbers such as 5E7
∃ (a backwards E; U+2203) or
existential quantification , the symbol for "there exists...", in predicate logic
∃!, meaning "there exists only one" (or "there exists exactly one"), see
Uniqueness quantification
E, 14 in
hexadecimal and other positional numeral systems of a base of 15 or higher
E
X
{\displaystyle \operatorname {E} [X]}
or
expected value , the average expected outcome of a trial in probability theory
E , the
complete elliptic integral of the second kind
e , the
identity element
E , the
Erdős–Borwein constant
Medicine and genetics
Music
E (musical note)
E major , a scale
E minor , a scale
E major chord, see
Chord names and symbols (popular music)
E (video) , by Eminem
E (Adrian Belew album) , 2009
É (album) , by Duda Brack, 2015
E (Ecco2K album) , 2019
E (Enslaved album) , 2017
E (Epik High album) , 2009
E (single album) , by Big Bang, 2015
"E", a song by Baboon from
Sausage , 1992
People
Physics and engineering
e (or e− ) or
electron , a fundamental subatomic particle
e or
elementary charge , the absolute value of the electric charge carried by a single electron.
e or
coefficient of restitution (COR), a measure of the elasticity of a collision in mechanics
E, the symbol for energy in equations concerning
mass–energy equivalence
E or
Young's modulus , a measure of stiffness in solid mechanics
E or
exa- , the SI prefix for 1018
E-layer or the Kennelly-Heaviside layer, part of the ionosphere
E, the symbol for an
electric field
e or
orbital eccentricity , a measure of how much a conic section deviates from a circle
E or Equal Energy spectrum, a definition of
white in colour printing
E, the
electrode potential , the electromotive force of a cell built of two electrodes
Television and film
E! , Entertainment Television, an American cable and satellite TV network
E! (Canada):
E! (Canadian TV system) , a defunct over-the-air television system operated by Canwest from 2001 to 2009 (originally known as CH until 2007)
E! (Canadian TV channel) , a Canadian cable/satellite specialty channel owned by Bell Media that launched in November 2010.
E (2006 film) , a 2006 Tamil film
E (2017 film)
E, or
Edna Mode , a character from the movie The Incredibles
E, or
Eric Murphy , a character from the television series Entourage
E, the production code for the 1964 Doctor Who serial
The Keys of Marinus
Other uses
See also
Topics referred to by the same term