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.

Learn about the Greek letter Sigma (σ), its pronunciation, usage examples, and common applications in mathematics, science, and engineering.

May 18, 2025 · σ • (s) (lowercase, uppercase Σ) Lower-case sigma (σίγμα), the 18th letter of the ancient Greek alphabet. It represented the voiceless alveolar fricative /s/. It is preceded by ρ and followed by τ.

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.

I love Sigma, it is fun to use, and can do many clever things. So means to sum things up ... Sum whatever is after the Sigma:

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.

Learn about the standard deviation symbol (σ), how to type it, its usage in mathematics and science, and copy the symbol with one click. Includes related statistical symbols and comprehensive guides.

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

σ represents: the divisor function in number theory the population standard deviation or spread in probability and statistics a type of covalent bond in Chemistry (sigma bond) the selection operator in …

Explore Sigma (Σ, σ/ς): Summation in math, significance in Greek. Discover its power!