Today, it is known as lunate sigma (uppercase Ϲ, lowercase ϲ), because of its crescent -like shape, and is still widely used in decorative typefaces in Greece, especially in religious and …

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 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 …

There are two primary forms of the sigma symbol math: Uppercase Sigma (Σ): Represents summation. Example: ∑ 5i=1 i = 1+2+3+4+5. Lowercase Sigma (σ): Commonly used in …

The sigma symbol (Σ σ/ς) is the 18th letter of the Greek alphabet. Learn its meaning, see uppercase 'Σ' and lowercase 'σ/ς' forms, and easily copy and paste the symbol for your use.

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.

Sigma (Σ, σ) 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 …

The Sigma symbol, represented by the Greek letter Σ, is a powerful and versatile symbol in mathematics. Its use extends across various branches of mathematics, making it a …

Sigma is the upper case letter S in Greek. And S stands for S um. 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: