Format Mirrorless 63 DSLR 26 Mount L-Mount 63 Sony E 65 Canon RF 9 Nikon Z 3 Canon EF 26 Nikon F 25 Canon EF-M 3 Sigma SA 24 Sony A 3 Fujifilm X 10 Micro 4/3 3 Pentax 2 Sensor …

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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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Dec 24, 2025 · Adjective sigma (comparative more sigma, superlative most sigma) (Internet slang) Possessing characteristics of a sigma male.

Oct 2, 2025 · Six Sigma, a quality-control methodology first developed for manufacturing, is now used by business and organizations of all types.

Dec 23, 2025 · Recent reports of tighter lithium supply from China have pushed prices higher, with Sigma Lithium responding by adjusting sales volumes to benefit from the stronger pricing …

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.

sigma in American English (ˈsɪɡmə ) noun Origin: Gr the eighteenth letter of the Greek alphabet (Σ, σ, ς)