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N-Ary Summation Symbol

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N-Ary Summation Symbol Info

Symbol∑
NameN-Ary Summation
UnicodeU+2211
HTML Entity∑
Windows Alt CodeAlt+8721
Mac Shortcut—

How to Type the N-Ary Summation Symbol

Copy and Paste (Easiest)

Click the ∑ symbol above or the copy button. Then paste with Ctrl+V (Windows) or Cmd+V (Mac).

Windows (Alt Code)

Hold Alt and type 8721 on the number pad. Release Alt.

HTML

Use ∑ in your HTML code.

About the N-Ary Summation Symbol

The summation symbol is a large uppercase Sigma used specifically as a mathematical operator for summing a sequence of numbers or expressions. Introduced by Leonhard Euler in the 18th century, it is one of the most recognised symbols in mathematics and is distinct from the Greek letter Sigma.

Common Uses

Mathematical summation, series notation, statistics, physics, engineering formulas, academic papers

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