Greek Capital Letter Sigma

Σ
Symbol Format Data
Σ Code Point
U+03A3
TeX
\Sigma
SVG
Symbol Table

Usage

The capital Greek letter (capital sigma) is used in algebra to represent the summation operator. Typically, the symbol appears in an expression like this:

In plain language this expression means sum together the expressions represented by starting from and ending when .

Related

sigma

The Greek letter σ (sigma) is used in statistics to represent the standard deviation of a population.

Links

Summation

The summation operator is represented by the symbol Σ (capital sigma) and represents the operation of summing a sequence of expressions together. The operator is used in math to represent the sequence and series.