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 church contexts (i.e. …

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.

Greek alphabet letters and symbols. Greek letters pronunciation.

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 statistics for standard …

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.

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 summation. When …