∑

N-Ary Summation

U+2211

Quick Reference
Unicode
U+2211
HTML Entity
∑
HTML Numeric
∑
CSS
\2211
JavaScript
\u2211
How to Type ∑
OSLayoutShortcut
Windows(you)UsAltGr + W
WindowsUkAltGr + W
WindowsGermanAltGr + W
macOSUs—
macOSUkOption + W
macOSGermanOption + W
About N-Ary Summation

The summation symbol (capital Greek sigma) indicates the sum of a sequence of numbers or expressions.

Usage

Used in mathematics and statistics for summation notation. Example: ∑(i=1 to n) represents adding all terms from 1 to n.

Related Symbols
∫Integral SignπGreek Small Letter Pi∞Infinity Symbol∆Increment (Delta)
Analyze ∑ in Symbol Spotter