Search results
Results from the WOW.Com Content Network
Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Ancient Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals , it has a value of 200.
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 .
In the empirical sciences, the so-called three-sigma rule of thumb (or 3 σ rule) expresses a conventional heuristic that nearly all values are taken to lie within three standard deviations of the mean, and thus it is empirically useful to treat 99.7% probability as near certainty.
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.
In addition, he wrote Sigma's first constitution and was the first president of Alpha Chapter. He was the first person to graduate from Howard University in 3 years with two degrees (A.B and a B.Ed. degree). Charles I. Brown (August 27, 1890 – December 21, 1981), co-founder of Phi Beta Sigma Fraternity; first vice-president of Phi Beta Sigma.
Ood Sigma, a fictional character from the Doctor Who series; Space City Sigma, a 1980s Indian science fiction TV series; Sigma, a fictional character from the anime Tweeny Witches; Sigma Society, a fictional Mensa-type club, appearing in the third episode of Columbo sixth season; Sigma, a fictional character from the Bungo Stray Dogs manga and ...
According to the sigma bond rule, the number of sigma bonds in a molecule is equivalent to the number of atoms plus the number of rings minus one. N σ = N atoms + N rings − 1 This rule is a special-case application of the Euler characteristic of the graph which represents the molecule.
SiGMA Group is a global events and media organization with over 250 employees, focusing on online and offline gaming, emerging technologies, and affiliate marketing. The organization operates through eight pillars: SiGMA Events, SiGMA ADR, SiGMA Foundation, SiGMA Media, SiGMA Brokerage, SiGMA Play, and SiGMA Poker Tour (SPT), as well as SiGMA Investment (Ikigai Ventures).SiGMA focuses on ...