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In number theory, σ is included in various divisor functions, especially the sigma function or sum-of-divisors function. In applied mathematics, σ (T) denotes the spectrum of a linear map T.

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The official global site of camera & lens manufacturing company Sigma.Here you can find information about our company and our products, support, repairs and inspections, as well as …

The Greek letter σ (sigma) is used in statistics to represent the standard of a population. It also has various uses in other areas of math and science.

The small letter sigma (σ) is used to represent standard deviation in math and statistics. It is also used to show syllable in linguistic, a shielding constant in chemistry and sum of divisors in math.

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Sigma Corporation of America is a subsidiary of the Sigma Corporation, a Japanese based family owned manufacturer of DSLR cameras, camera lenses and camera accessories. Founded in …

Canon EF-M mount Canon RF Mount FUJIFILM X Mount Micro Four Thirds mount Nikon Z mount Sony E-mount SIGMA SA-mount Canon EF mount Nikon F mount Pentax mount Sony A-mount …

The meaning of SIGMA is the 18th letter of the Greek alphabet. How to use sigma in a sentence.