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Eighteenth letter of the Greek alphabet
Sigma (/ˈsɪɡmə/ SIG-mə; uppercase Σ, lowercase σ, lowercase in word-final position ς; Greek: σίγμα) is the eighteenth letter of the Greek alphabet. When
Sigma
Business process improvement technique
Six Sigma (6σ) is a set of techniques and tools for process improvement. It was introduced by American engineer Bill Smith while working at Motorola in
Six_Sigma
Topics referred to by the same term
sigma, Sigma, Σ, σ, or ς in Wiktionary, the free dictionary. Sigma (Σ or σ, word-final lowercase ς) is the 18th letter of the Greek alphabet. Sigma may
Sigma_(disambiguation)
North American collegiate sorority
Sigma Sigma Sigma (ΣΣΣ), also known as Tri Sigma, is a national American women's sorority. It was established in 1898 at what is now Longwood University
Sigma_Sigma_Sigma
2024 single by Betsy and Maria Iankovskaia
"Sigma Boy" (Russian: "Сигма Бой") is a song by Russian bloggers and singers Betsy and Maria Iankovskaia, released as a single by the record label Rhymes
Sigma_Boy
Measure of variation in statistics
represented in mathematical texts and equations by the lowercase Greek letter σ (sigma). The standard deviation of a random variable, sample, statistical population
Standard_deviation
Chemical, life science and biotechnology company
Sigma-Aldrich (part of MilliporeSigma) is a brand operating within an American chemical, life science, and biotechnology company owned by the multinational
Sigma-Aldrich
Matrices important in quantum mechanics and the study of spin
sigma _{j},\sigma _{k}\right]+\{\sigma _{j},\sigma _{k}\}&=(\sigma _{j}\sigma _{k}-\sigma _{k}\sigma _{j})+(\sigma _{j}\sigma _{k}+\sigma _{k}\sigma
Pauli_matrices
Method for converting signals between digital and analog
Delta-sigma (ΔΣ; or sigma-delta, ΣΔ) modulation is an oversampling method for encoding signals into low bit depth digital signals at a very high sample-frequency
Delta-sigma_modulation
Slang terms for men
have expanded the Greek-letter hierarchy to include related terms such as "sigma male," used to describe a solitary but high-status "lone wolf" who exists
Alpha_and_beta_male
Shorthand used in statistics
-1\sigma \leq X\leq \mu +1\sigma )&\approx 68.27\%\\\Pr(\mu -2\sigma \leq X\leq \mu +2\sigma )&\approx 95.45\%\\\Pr(\mu -3\sigma \leq X\leq \mu +3\sigma
68–95–99.7_rule
Field theory of a point particle confined to move on a fixed manifold
In physics, a sigma model is a field theory that describes the field as a point particle confined to move on a fixed manifold. This manifold can be taken
Sigma_model
In probability theory, a sigma-martingale is a semimartingale with an integral representation. Sigma-martingales were introduced by C.S. Chou and M. Emery
Sigma-martingale
Probability distribution
{\textstyle \sigma ^{2}} is the variance. The standard deviation of the distribution is the positive value σ {\displaystyle \sigma } (sigma). A random
Normal_distribution
Methodology of systematically removing waste
Lean Six Sigma is a process improvement method that uses a collaborative team effort to improve performance by systematically removing operational waste
Lean_Six_Sigma
Honor society for physics and astronomy
Sigma Pi Sigma (ΣΠΣ) is an American honor society for physics and astronomy. It was founded at Davidson College in Davidson, North Carolina on December
Sigma_Pi_Sigma
Star in the constellation Pisces
Sigma Piscium (Sigma Psc, σ Piscium, σ Psc) is a binary star in the zodiac constellation of Pisces. It has an apparent magnitude of +5.50, meaning it is
Sigma_Piscium
North American collegiate fraternity
Sigma Chi (ΣΧ) is one of the largest North American social fraternities. The fraternity has 244 active undergraduate chapters and 152 alumni chapters
Sigma_Chi
Dutch-built family of modular naval vessels, of corvette or frigate size
new SIGMA designs released in early 2015 these are the: SIGMA 8313 SIGMA 8011 SIGMA 7613 SIGMA 6610 They are likely to be part of the Compact SIGMA series
Sigma-class_design
Israeli self-propelled howitzer
The SIGMA 155 is a 155mm self-propelled howitzer manufactured by the Israeli defense company Elbit Systems being introduced into service in the Israel
SIGMA_155
American hedge fund management firm
Two Sigma Investments, LP is an American hedge fund headquartered in New York City. It uses a variety of technological methods, including artificial intelligence
Two_Sigma
International historically African American sorority
Delta Sigma Theta Sorority, Inc. (ΔΣΘ) is a historically African American sorority. The organization was founded by college-educated women dedicated to
Delta_Sigma_Theta
Topics referred to by the same term
Sigma 6 may refer to: G.I. Joe: Sigma 6, a line of military-themed action figures and toys SDS Sigma 6, one of the SDS Sigma series of computers made by
Sigma_6
Honor society for science and engineering
Sigma Xi, The Scientific Research Honor Society (ΣΞ) (/ˈsɪɡmə/ /zaɪ/ ) is an international non-profit honor society for scientists and engineers. Sigma
Sigma_Xi
Family closed under subsets and countable unions
mathematics, particularly measure theory, a 𝜎-ideal, or sigma ideal, of a σ-algebra (𝜎, read "sigma") is a subset with certain desirable closure properties
Sigma-ideal
Honorary fraternity at the University of Cincinnati, US
Sigma Sigma (ΣΣ) is a men's upperclassmen honorary fraternity at the University of Cincinnati. Founded in 1898, it is the oldest of such organizations
Sigma_Sigma
American college fraternity (1921–2020)
Sigma Mu Sigma (ΣΜΣ) is a former American college fraternity founded in 1921 at Trine University, formerly Tri-State University. Sigma Mu Sigma was historically
Sigma_Mu_Sigma
Algebraic structure of set algebra
In mathematical analysis and in probability theory, a σ-algebra ("sigma algebra") is part of the formalism for defining sets that can be measured. In
Σ-algebra
Association football club in Czech Republic
SK Sigma Olomouc is a Czech professional football club based in the city of Olomouc. The club currently competes in the Czech First League, the first
SK_Sigma_Olomouc
Star in the constellation Perseus
Sigma Persei (Sigma Per, σ Persei, σ Per) is an orange K-type giant star with an apparent magnitude of +4.36. It is approximately 343 light-years from
Sigma_Persei
American musical instrument brand
Sigma Guitars is a guitar manufacturing brand originally released by C.F. Martin & Company as a line of guitars at affordable prices to compete with the
Sigma_Guitars
North American collegiate fraternity
Sigma Nu (ΣΝ) is an undergraduate college fraternity founded at the Virginia Military Institute in 1869. Since its founding, Sigma Nu has chartered more
Sigma_Nu
Sigma Sigma Sigma sorority has 98 active chapters. Following is a list of Sigma Sigma Sigma chapters. Active chapters noted in bold, inactive chapters
List of Sigma Sigma Sigma chapters
List_of_Sigma_Sigma_Sigma_chapters
North American collegiate fraternity
Kappa Sigma (ΚΣ), commonly known as Kappa Sig or KSig, is an American collegiate social fraternity founded at the University of Virginia in 1869. Kappa
Kappa_Sigma
American collegiate sorority for South Asians
Sigma Sigma Rho (ΣΣΡ) is a South Asian interest collegiate sorority in the United States. It was established at St. John's University in 1998. It is a
Sigma_Sigma_Rho
American osteopathic honor fraternity
Sigma Sigma Phi (ΣΣΦ or SSP), is an American osteopathic medicine honors fraternity for medical students training to be Doctors of Osteopathic Medicine
Sigma_Sigma_Phi
Family of sets closed under countable unions
mathematics, a nonempty collection of sets is called a 𝜎-ring (pronounced sigma-ring) if it is closed under countable union and relative complementation
Sigma-ring
Class of cell surface receptors
siramesine. There are two subtypes, sigma-1 receptors (σ1) and sigma-2 receptors (σ2), which are classified as sigma receptors for their pharmacological
Sigma_receptor
Covalent chemical bond
In chemistry, sigma bonds (σ bonds) or sigma overlap are the strongest type of covalent chemical bond. They are formed by head-on overlapping between atomic
Sigma_bond
British single-seat glider, 1971
The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing
Operation_Sigma_Sigma
American collegiate service sorority
Retrieved 2009-07-23. "Gamma Sigma Sigma - Service". Gamma Sigma Sigma. "Gamma Sigma Sigma - Our Organization". Gamma Sigma Sigma. Benton Harbor News Palladium
Gamma_Sigma_Sigma
Star in the constellation Boötes
Sigma Boötis, also named Genghe, is a single, yellow-hued star in the northern constellation of Boötes. This star is visible to the naked eye with an
Sigma_Boötis
North American collegiate sorority
Phi Sigma Sigma (ΦΣΣ), colloquially known as Phi Sig, was the first collegiate nonsectarian sorority to allow membership of women of all faiths and backgrounds
Phi_Sigma_Sigma
Topics referred to by the same term
Sigma 7 may refer to: the callsign of the spacecraft used in the 1962 Mercury-Atlas 8 mission the SDS Sigma 7 computer, made by Scientific Data Systems
Sigma_7
Swedish IT company group
Sigma AB offers its services through the business areas Sigma Technology, Sigma Connectivity, Sigma Industry and Sigma Software, within which Sigma AB
Sigma_AB
Concept in measure theory
space ( X , F ) {\displaystyle (X,{\mathcal {F}})} , a σ {\displaystyle \sigma } -finite subset is a measurable subset which is the union of a countable
Σ-finite_measure
Racing team
Sigma Autosport was a CART Champ Car racing team that competed in 2001 and 2002. It was owned by former Toyota Atlantic driver Tom Wieringa. Sigma competed
Sigma_Autosport
Canadian soccer team
Ontario Premier League, as Sigma FC. Over 140 Sigma players have gone on to play NCAA or U Sports soccer on scholarships. Sigma was formed in 2005 by Constantine
Sigma_FC
Star in the constellation Octans
Sigma Octantis is a solitary star in the Octans constellation that forms the pole star of the Southern Hemisphere. Its name is also written as σ Octantis
Sigma_Octantis
Addition of several numbers or other values
also ways to generalize the use of many sigma notations. For example, one writes double summation as two sigma notations with different dummy variables
Summation
Defunct American collegiate fraternity
Sigma Phi Sigma (ΣΦΣ) was an American national collegiate fraternity founded in 1908 at the University of Pennsylvania. It ceased operations during WWII
Sigma_Phi_Sigma
Australian pharmaceutical wholesale and retail company
Sigma Healthcare Limited is an Australian, ASX-listed company with a focus on the pharmacy industry. The company has pharmacy operations in retail, wholesale
Sigma_Healthcare
Others, such as Alpha Sigma, Beta Beta, Delta Sigma, Gamma Sigma, Epsilon Sigma, Omicron Sigma, Sigma Sigma, and Theta Sigma (Original) were chartered
List of Delta Sigma Theta collegiate chapters
List_of_Delta_Sigma_Theta_collegiate_chapters
Car model from Chrysler (1977–1987)
The Chrysler Sigma is a version of the Mitsubishi Galant automobile that was built by Chrysler Australia in Adelaide, South Australia from 1977. When
Chrysler_Sigma
Star in the constellation Centaurus
Sigma Centauri is a solitary star in the southern constellation of Centaurus. Its name is a Bayer designation that is Latinized from σ Centauri, and abbreviated
Sigma_Centauri
Battery electric bus range marketed by Mellor Coachcraft
launched the Sigma with the Sigma 7 and Sigma 10 models, with the Sigma 7 being a single door model and the Sigma 10 being a dual door model. The Sigma 7 debuted
Mellor_Sigma
English drum and bass duo
Sigma are an English drum and bass DJ and record production duo consisting of Cameron James Edwards and Joseph Aluin Lenzie. They met at Leeds University
Sigma_(DJs)
Probability distribution
{\ln x-\mu }{\sigma }}\right)}{\frac {1}{\sigma x}}\\[6pt]&={\frac {1}{x\sigma {\sqrt {2\pi }}}}\exp \left(-{\frac {(\ln x-\mu )^{2}}{2\sigma ^{2}}}\right)~
Log-normal_distribution
Index of articles associated with the same name
Wikimedia Commons has media related to Mitsubishi Sigma. Mitsubishi Sigma is a model name that was used by the Japanese automobile manufacturer Mitsubishi
Mitsubishi_Sigma
Japanese camera and camera lens manufacturer
Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories
Sigma_Corporation
Measure of specific energy in humid air
Sigma heat, denoted S {\displaystyle S} , is a measure of the specific energy of humid air. It is used in the field of mining engineering for calculations
Sigma_heat
International historically Black American collegiate fraternity
Phi Beta Sigma Fraternity, Inc. (ΦΒΣ) is a historically African American fraternity. It was founded at Howard University in Washington, D.C. in 1914.
Phi_Beta_Sigma
Protein needed for initiation of transcription in prokaryotes
A sigma factor (σ factor or specificity factor) is a protein needed for initiation of transcription in bacteria. It is a bacterial transcription initiation
Sigma_factor
Topics referred to by the same term
mathematics, by sigma function one can mean one of the following: The sum-of-divisors function σa(n), an arithmetic function Weierstrass sigma function, related
Sigma_function
Representation of mechanical stress at every point within a deformed 3D object
sigma _{1}+\sigma _{2}+\sigma _{3}\\I_{2}&=\sigma _{1}\sigma _{2}+\sigma _{2}\sigma _{3}+\sigma _{3}\sigma _{1}\\I_{3}&=\sigma _{1}\sigma _{2}\sigma
Cauchy_stress_tensor
Star in the constellation Aries
Sigma Arietis is a star in the northern constellation of Aries. Its name is a Bayer designation that is Latinized from σ Arietis, and abbreviated Sigma
Sigma_Arietis
Overwatch character
Sigma is the alias of Siebren de Kuiper, a character who first appeared in a 2019 update for the video game Overwatch, a Blizzard Entertainment–developed
Sigma_(Overwatch)
American multicultural collegiate sorority
Mu Sigma Upsilon Sorority, Incorporated (ΜΣΥ) is an American multicultural intercollegiate sorority. It was founded in 1981 at Rutgers University–New
Mu_Sigma_Upsilon
Series of third-generation computers
16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS. At the time, the only competition for the Sigma 7 in the
SDS_Sigma_series
American college sorority (1920–1933)
Sigma Sigma Omicron (ΣΣΟ), also known as Sigma Phi Beta (ΣΦΒ), was an American college sorority. It was established at New York University in New York
Sigma_Sigma_Omicron
Sigma Pi Sigma is an American honor society for physics and astronomy. It was founded at Davidson College in Davidson, North Carolina on December 11, 1921
List of Sigma Pi Sigma members
List_of_Sigma_Pi_Sigma_members
Mathematical version of an order change
σ ( 6 ) = 1 {\displaystyle \sigma (1)=2,\ \ \sigma (2)=6,\ \ \sigma (3)=5,\ \ \sigma (4)=4,\ \ \sigma (5)=3,\ \ \sigma (6)=1} can be written as σ = (
Permutation
English drum and bass duo Sigma have released four studio albums, nine extended plays and 48 singles. The duo signed to 3 Beat Records in the summer of
Sigma_discography
North American collegiate fraternity
Sigma Alpha Epsilon (ΣΑΕ) is a North American Greek-letter social college fraternity. It was founded at the University of Alabama in Tuscaloosa, Alabama
Sigma_Alpha_Epsilon
Foundational principle in quantum physics
that year and by Hermann Weyl in 1928: σ x σ p ≥ ℏ 2 {\displaystyle \sigma _{x}\sigma _{p}\geq {\frac {\hbar }{2}}} where ℏ = h 2 π {\displaystyle \hbar
Uncertainty_principle
American analytics and business intelligence company
Sigma is an American cloud-based analytics and business intelligence company. Sigma was founded in 2014 by Jason Frantz and Rob Woollen. Sigma was founded
Sigma_(analytics_company)
Star in the constellation Auriga
Sigma Aurigae is a star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from σ Aurigae, and abbreviated Sigma
Sigma_Aurigae
Star in the constellation Draco
Sigma Draconis is a single star in the northern constellation of Draco. It has the proper name Alsafi /ælˈseɪfi/, while Sigma Draconis, which is latinised
Sigma_Draconis
African-American fraternity
Sigma Pi Phi (ΣΠΦ), also known as The Boulé, is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the
Sigma_Pi_Phi
Mathematical function
{3A}{\sigma _{X}\sigma _{Y}}}&0&0&-{\frac {1}{\sigma _{Y}}}&-{\frac {1}{\sigma _{X}}}\\0&{\frac {\sigma _{X}}{A\sigma _{Y}}}&0&0&0\\0&0&{\frac {\sigma _{Y}}{A\sigma
Gaussian_function
Multiple star system in the constellation of Scorpius
Sigma Scorpii (or σ Scorpii, abbreviated Sigma Sco or σ Sco), is a multiple star system in the constellation of Scorpius, located near the red supergiant
Sigma_Scorpii
Commercial television network in Cyprus
Sigma TV is a commercial network in Cyprus that began broadcasting on April 3, 1995. It is a private service and is currently the channel in Cyprus with
Sigma_TV
Sigma Designs, Inc., was an American public corporation that designed and built high-performance system-on-a-chip semiconductor technologies for Internet-based
Sigma_Designs
North American collegiate fraternity
Sigma Pi (ΣΠ) is a collegiate fraternity in North America. As of 2021, it had more than 5,000 undergraduate members and over 118,000 alumni. The fraternity
Sigma_Pi
Species of snake
Boa sigma, known commonly as the Mexican west coast boa constrictor, is a species of snake in the family Boidae. The species is endemic to western Mexico
Boa_sigma
2008 video game
Sigma Harmonics is a 2008 role-playing video game co-developed by Square Enix and Think Garage, and published by Square Enix for the Nintendo DS. An expanded
Sigma_Harmonics
Municipality in Capiz, Philippines
Sigma, officially the Municipality of Sigma (Capiznon/Hiligaynon: Banwa sang Sigma; Tagalog: Bayan ng Sigma), is a municipality in the province of Capiz
Sigma,_Capiz
Filipino collegiate fraternity
Beta Sigma (βΣ) is a collegiate fraternity based in the Philippines. It was founded in 1946 at the University of the Philippines in Manila. It is one
Beta_Sigma
Gamma Sigma Sigma is a national service sorority founded by the merger of eight local sororities on October 12, 1952, at Beekman Tower in New York City
List of Gamma Sigma Sigma chapters
List_of_Gamma_Sigma_Sigma_chapters
American honor society for textiles
Sigma Tau Sigma (ΣΤΣ) is a local honorary fraternity for textiles. It was established in 1929 at North Carolina State University in Raleigh, North Carolina
Sigma_Tau_Sigma
Reciprocating internal combustion engine
The Ford Sigma is a small straight four automobile engine introduced in 1995 by Ford Motor Company. Its first evolution was sold as the Zetec-S (not to
Ford_Sigma_engine
1969 Formula One show car
Ferrari Sigma, also known as the Ferrari Sigma Grand Prix or Pininfarina Sigma, was a Formula One show car built in 1969 by Pininfarina. The Sigma, unveiled
Ferrari_Sigma
Effect of variables' uncertainties on the uncertainty of a function based on them
_{1}^{2}&\sigma _{12}&\sigma _{13}&\cdots \\\sigma _{21}&\sigma _{2}^{2}&\sigma _{23}&\cdots \\\sigma _{31}&\sigma _{32}&\sigma _{3}^{2}&\cdots
Propagation_of_uncertainty
Annual award for excellence in journalism
The Sigma Delta Chi Awards are presented annually by the Society of Professional Journalists (SPJ) (formerly Sigma Delta Chi) for excellence in journalism
Sigma_Delta_Chi_Award
Digital mirrorless camera
The Sigma fp is a 24.6-megapixel full-frame mirrorless interchangeable-lens camera made by Sigma. It was publicly announced in July 2019 (2019-07) and
Sigma_fp
Generators of the Clifford algebra for relativistic quantum mechanics
}={\begin{pmatrix}0&\sigma ^{\mu }\\{\overline {\sigma }}^{\mu }&0\end{pmatrix}},\quad \sigma ^{\mu }\equiv (1,\sigma ^{i}),\quad {\overline {\sigma }}^{\mu }\equiv
Gamma_matrices
Topics referred to by the same term
The Sigma Protocol is the name of a novel. Sigma Protocol may also refer to: Sigma protocols, a type of cryptographic protocol. This disambiguation page
Sigma_Protocol
Matrix decomposition
{U\Sigma V} ^{\mathsf {T}}} . The diagonal entries σ i = Σ i i {\displaystyle \sigma _{i}=\mathbf {\Sigma } _{ii}} of Σ {\displaystyle \mathbf {\Sigma }
Singular_value_decomposition
Electro Mechanic Horse Race
Sigma Derby is an electro-mechanical horse race used for gambling manufactured by Japanese manufacturer Sigma Game Inc. and introduced in 1985. Up to
Sigma_Derby
American collegiate honor society
Tau Sigma (ΤΣ) is an American honor society for university transfer students. It was established at Auburn University in 1999 and has spread to include
Tau_Sigma
SIGMA
SIGMA
SIGMA
Surname or Lastname
English (Merseyside)
English (Merseyside) : variant of Cotton.
Girl/Female
Hindu, Indian, Punjabi, Sanskrit, Sikh
Earth
Biblical
see Charran
Boy/Male
Indian, Punjabi, Sikh
Perfect Victory
Boy/Male
Hindu, Indian
Lord Sai; Offering; Light
Boy/Male
Tamil
Chithrakundala | சிதà¯à®°à®•à¯à®¨à¯à®¤à®¾à®²à®¾
One of the kauravas
Boy/Male
Arabic
Generous; Pious; Peace; Peace Maker
Male
Slovene
Pet form of Slovene Dimitrij, MITJA means "loves the earth" or "follower of Demeter."
Boy/Male
Hindu, Indian
Blossomed
Boy/Male
Arabic, Muslim
Glory of the Kingdom
SIGMA
SIGMA
SIGMA
SIGMA
SIGMA
n.
The Greek letter /, /, or / (English S, or s). It originally had the form of the English C.
pl.
of Sigma