LaTeX Summation (∑) - Complete Guide
The summation symbol (∑) represents the sum of a sequence of values.
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Summation
LaTeX Code
No package required
\sumSummation notation
What is the LaTeX Summation?
The summation symbol (∑) is the notation for adding up a series of terms. It is typically used with upper and lower bounds to indicate the range of summation.
How to Use Summation in LaTeX
Method 1: Using \sum
✅No package required
Summation notation
Example: Using \sum
\documentclass{article}
\begin{document}
% Using the Summation
Text with \sum
\end{document}Common Use Cases
The Summation symbol is commonly used in the following contexts:
Sum of Series
Adding terms in a sequence.
Code
$\sum_{i=1}^{n} i = \frac{n(n+1)}{2}$Output
Σ(i=1 to n) i = n(n+1)/2
Complete Examples
Sum Formula
Sum of natural numbers
\documentclass{article}
\begin{document}
The sum of the first n natural numbers:
$$\sum_{i=1}^{n} i = \frac{n(n+1)}{2}$$
\end{document}Frequently Asked Questions
Which method should I use?
We recommend using the method marked as "Recommended" above. However, the best method depends on your specific needs:
- \sum: Summation notation
Where do I use this symbol?
This symbol can be used:
- In mathematical equations (math mode)
- In regular text (if using text mode)
- In various document environments
Can I use this in display mode?
Yes, symbols that work in math mode (between $ $) also work in display mode (between $$ $$). This allows you to display the symbol on its own line with larger formatting.
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