|
|
| Line 1: |
Line 1: |
| {{wiktionarypar|sigma}}
| | Hello, I'm Mora, a 18 year old from Bologna, Italy.<br>My hobbies include (but are not limited to) Basketball, Paintball and watching The Big Bang Theory.<br><br>Feel free to visit my webpage ... [http://shredjunky.wordpress.com Shred-Junky] |
| | |
| '''[[Sigma]]''' is a letter of the Greek alphabet.
| |
| | |
| '''Sigma''' may also refer to:
| |
| | |
| == Companies ==
| |
| * [[SIGMA (verification service)]], Nielsen Media Research's tracking system for videos
| |
| * [[Sigma AB]], Swedish IT consultancy company
| |
| * [[Sigma Corporation]], a Japanese camera and lens manufacturer
| |
| * [[Sigma Designs]], Inc., a US semiconductor manufacturer
| |
| * [[Sigma Pharmaceuticals]], an Australian pharmaceutical company
| |
| * [[Sigma Sport]], a German manufacturer of electronic sports equipment
| |
| * [[Sigma TV]], a television channel in Cyprus
| |
| * [[Sigma-Aldrich]], an American chemical company
| |
| * [[Telkomsigma]] or Sigma Cipta Caraka, an Indonesian ICT business solution provider
| |
| * [[Sigma Tube & Bar]], a Steel Service Center supporting oilfield equipment manufacturers
| |
| | |
| == Mathematics ==
| |
| | |
| * [[Summation]] operator forming a series in mathematics Σ
| |
| * [[Standard deviation]] in statistics σ
| |
| * [[Divisor function]] in number theory σ
| |
| * [[Sigma-algebra]] (σ-algebra, σ-field) in set theory
| |
| * A [[busy beaver]] function in computability theory Σ
| |
| * <math>\Sigma^0_n</math> or <math>\Sigma^1_n</math>, sets in the [[analytical hierarchy]]
| |
| * <math>\Sigma^P_i</math>, a set in the [[polynomial hierarchy]]
| |
| * [[Harish-Chandra's σ function]]
| |
| * [[Weierstrass sigma function]]
| |
| | |
| == Science ==
| |
| | |
| * [[Stefan-Boltzmann constant]] of radiation in physics σ
| |
| * [[Sigma factor]] of RNA polymerase in biology σ
| |
| * In the [[Hammett equation]], the electronic substituent constant σ for activation of substituted arenes
| |
| * [[Sigma baryon]], a class of baryons in particle physics
| |
| * [[Pauli matrices]] in quantum physics
| |
| * [[Cross section (physics)|Cross section]] σ in physics
| |
| * [[Sigma bond]] in chemistry σ
| |
| * [[Sigma receptor]], a neural receptor
| |
| * [[Electrical conductivity]], a measure of a material's ability to conduct electricity σ
| |
| * [[Stress (mechanics)]], the force per unit area applied by internal forces of a material σ
| |
| | |
| == Products ==
| |
| | |
| * [[Sigma (sailplane)]]
| |
| * [[Mitsubishi Sigma (disambiguation)]]
| |
| * [[GM Sigma platform]], a mid-size car automobile platform from General Motors Corporation
| |
| * [[Smith & Wesson Sigma]], a firearm
| |
| * [[Sigma Guitars]]
| |
| * The [[SDS Sigma series]] of computers from Scientific Data Systems
| |
| | |
| == Video games ==
| |
| | |
| * [[Sigma (Mega Man X)|Sigma (''Mega Man X'')]], the main villain in the ''Mega Man X'' video game series
| |
| * ''[[Ninja Gaiden Sigma]]'', a PlayStation 3 title in the ''Ninja Gaiden'' video game series
| |
| * Sigma, a character in the ''[[BioShock 2]]'' downloadable content pack "Minerva's Den"
| |
| * ''[[Sigma Harmonics]]'', a video game
| |
| * Sigma, the protagonist in the [[Nintendo 3DS]] and [[PlayStation Vita]] game ''[[Zero Escape: Virtue's Last Reward]]''
| |
| * Sigma, a professional [[e-sport]] team on [[Dota 2]]
| |
| | |
| == Other ==
| |
| | |
| * [[Sigma (couch)]], an ancient Roman couch used for banquets
| |
| * [[Sigma, Capiz]], a municipality in the Philippines
| |
| *[[Sigma, Lee County, Virginia]]
| |
| * The [[Six Sigma]] quality management program
| |
| * [[Ood]] Sigma, a fictional character from the ''Doctor Who'' series
| |
| * [[SK Sigma Olomouc]], Czech association football team
| |
| * ''[[Space City Sigma]]'', a 1980s Indian science fiction TV series
| |
| * [[Sigma class corvette]], a naval ship
| |
| * [[Sigma plan]], raising the dikes of the [[Scheldt]] in Belgium
| |
| | |
| ==See also==
| |
| * [[Sygma (disambiguation)]]
| |
| | |
| {{disambig}}
| |
Hello, I'm Mora, a 18 year old from Bologna, Italy.
My hobbies include (but are not limited to) Basketball, Paintball and watching The Big Bang Theory.
Feel free to visit my webpage ... Shred-Junky