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Sigma (/ ˈsɪɡmə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. In general mathematics, uppercase Σ is used as an operator for summation.
Sigma male (or simply sigma) is a term in internet slang used most often to describe the archetype of a male who is a "lone wolf". [ 1 ] [ 2 ] While the name is a product of manosphere message boards in the 2010s, the term has gained widespread prominence within internet culture , and since the early 2020s, has become an internet meme . [ 3 ]
Sigma-Aldrich (formally MilliporeSigma) [ 5 ][ 6 ] is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group. Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. It grew through various acquisitions until it had over 9,600 ...
What the sigma? Some know “sigma” as the 18th letter of the Greek alphabet but it’s also teen slang for a cool dude. According to Know Your Meme, sigma is “referring to a supposed ...
Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best known for ...
Using words, the standard deviation is the square root of the variance of X. The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.
Sigma bond. σ bond between two atoms: localization of electron density. In chemistry, sigma bonds (σ bonds) or sigma overlap are the strongest type of covalent chemical bond. [1] They are formed by head-on overlapping between atomic orbitals along the internuclear axis. Sigma bonding is most simply defined for diatomic molecules using the ...
English drum and bass duo Sigma have released three studio albums, nine extended plays and 37 singles. [ 1] The duo signed to 3 Beat Records in the summer of 2013. They released their debut single "Summer Calling" with 3Beat featuring vocals from Taylor Fowlis. Their second single "Rudeboy" featuring Doctor was released in December 2013.
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