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From Wikipedia, the free encyclopedia

Epsilon uc lc.svg
Greek alphabet
Αα Alpha Νν Nu
Ββ Beta Ξξ Xi
Γγ Gamma Οο Omicron
Δδ Delta Ππ Pi
Εε Epsilon Ρρ Rho
Ζζ Zeta Σσς Sigma
Ηη Eta Ττ Tau
Θθ Theta Υυ Upsilon
Ιι Iota Φφ Phi
Κκ Kappa Χχ Chi
Λλ Lambda Ψψ Psi
Μμ Mu Ωω Omega
Obsolete letters
Digamma uc lc.svg Digamma Qoppa uc lc.svg Qoppa
San uc lc.svg San Sampi uc lc.svg Sampi
Other characters
Stigma uc lc.svg Stigma Sho uc lc.svg Sho
Heta uc lc.svg Heta

Greek diacritics

Epsilon (uppercase Ε, lowercase ε; Greek: Έψιλον) is the fifth letter of the Greek alphabet, corresponding phonetically to a close-mid front unrounded vowel /e/. In the system of Greek numerals it has a value of 5. It was derived from the Phoenician letter He He. Letters that arose from Epsilon include the Roman E and Cyrillic Ye.

"Epsilon" (ἒ ψιλόν, "simple e") was coined in the Middle Ages to distinguish the letter from the diphthong αι, which started being pronounced the same way during the period of New Testament Greek.

There are two common symbols used for the lowercase epsilon: the lunate epsilon ϵ and the minuscule open e symbol ɛ. The two are often used interchangeably (although a particular document should generally use one or the other consistently).

The lunate epsilon ϵ (\epsilon, \epsilon\,, in LaTeX) has its origins in medieval Greek. The open e epsilon ɛ (\varepsilon, \varepsilon, in LaTeX), also called a Latin epsilon, derives from the extended Latin alphabet.

The lunate epsilon ϵ is not to be confused with the set membership symbol ∈, nor should the Latin ɛ be confused with the lunate Σ (Sigma).

Upper case: character code 0395 (or 494). Lower case: character code 03B5 (lunate) or 025B (Latin).

Symbol

The upper-case Epsilon is not commonly used outside of the Greek language because of its similarity to the Latin letter E.

The lower-case epsilon, ε/ϵ, or open e, ɛ, (see above) is used as the symbol for:

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Fictional names

  • In the popular web series "Red vs. Blue", Epsilon is the name of Agent Washington's AI, possessing memories from the breaking of the Alpha AI by Project Freelancer.
  • Epsilon in Malaysian Pale is the name of the second solo album released by Tangerine Dream leader Edgar Froese in 1975.
  • Epsilon is also an Australian light-powered female-looking robot that fought Pluto in an episode of Astro Boy.
  • Epsilon Eridani III is the planet that the spacestation Babylon 5 orbited in the eponymous sci-fi television series.
  • E-104 Epsilon is also the name of a robot in Sonic Adventure.
  • Epsilon is an otherworldy being in the book The Riddles of Epsilon by Christine Morton-Shaw.
  • "Epsilon 9" is the name of the Federation space station consumed by the V'ger cloud in Star Trek: The Motion Picture.
  • Epsilon is the name of an unlockable creature in the game Monster Rancher 2.
  • In Greek it is used for Epsilon Team.
  • "Epsilon Mirror" is the name of one of Aika's moves in the video game Skies of Arcadia.
  • Epsilon is the leader of the Rebellion in Mega Man X: Command Mission.
  • "The Epsilon Program" is a mysterious cult in the video game Grand Theft Auto: San Andreas by Game Developer Rockstar North. This cult is thought to be based on Scientology.
  • The Epsilon Project is a fictional experiment mentioned in the Dreamcast and Xbox versions of Dead or Alive 2 and is based around cloning.
  • Epsilon is the lowest of five social castes in the Aldous Huxley novel Brave New World.
  • "Plan Epsilon" was one of many plans to restore Doctor Doom to life in the event of his death, as shown in Fantastic Four issue no. 246, written by Stan Lee.
  • Epsilon-Eagle is the name of the protagonist in the Sega Mega Drive game Alien Soldier.
  • Epsilon was the name given to one of the ground support teams in the Sony Playstation game G-Police.
  • Epsilon is the name of the newly resurrected Yuri Faction in the Yuri's Revenge mod Mental Omega.
  • Epsilon was one of the warriors of Asgard in the Anime series Saint Seiya, Fenrir Epsilon, The Northern Wolf, when Dragon Shiryu had to fight for his life against him on his way to rescue Hilda.
  • Epsilon was the name of the chef dog in the Pixar movie Up when Carl and Russell are in Muntz's lair.
  • "Epsilon Knight" is the name of a racer in the Extreme-G racing game series who, if controlled by the computer, always happened to finish 5th.
  • Epsilon was a man-made God in the game AdventureQuest.
  • Epsilon was an alternative title to the Australian movie Alien Visitor.
  • Epsilon is a character in Megaman Zero 2 where you fight him as the final boss.

Other uses

References

  1. ^ EPSILON EUSKADI==JOAN VILLADELPRAT & SERGIO RINLAND & JORDI CATON==AZKOITIA (43º 10' 22" N - 2º 19' 26" O)

Wiktionary

Up to date as of January 15, 2010

Definition from Wiktionary, a free dictionary

See also epsilon

German

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German Wikipedia has an article on:
Epsilon

Wikipedia de

Noun

Epsilon n.

  1. epsilon (greek letter)

Simple English

Common letters
ΑaA ΜmEm
ΒbBe ΝnEn
GgGe ΟοO
ΔdDe ΠpPe
hHa ЖжZhe
ΕɛE RrAr
ΖzZe SsEs
ΗeEe ΤtTe
ΘөEth UuU
ΙiI FfEf
JjJe WwWa
ΚkKa ΧxXa
LlEl ОWоwWe
VvVe
Uncommon letters
Digamma Qoppa
San Sampi
Other letters
Stigma Sho

Greek alphabet


Epsilon (uppercase/lowercase Ε ε), is the letter of the Greek alphabet, used to represent the "e" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 5. Letters that came from it include the Roman E and Cyrillic Е. It is also used in calculus to represent a very small number.


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