LaTeX Asterisk (*) - Complete Guide
The asterisk (*) is used for footnotes, convolution operations, and general markers.
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Asterisk
LaTeX Code
No package required
*Asterisk symbol
No package required
\astMath mode asterisk
What is the LaTeX Asterisk?
The asterisk serves multiple purposes: as a footnote marker, to denote convolution in signal processing, or as a general annotation marker.
How to Use Asterisk in LaTeX
Method 1: Using *
✅No package required
Asterisk symbol
Example: Using *
\documentclass{article}
\begin{document}
% Using the Asterisk
Text with *
\end{document}Method 2: Using \ast
✅No package required
Math mode asterisk
Example: Using \ast
\documentclass{article}
\begin{document}
% Using the Asterisk
Text with \ast
\end{document}Common Use Cases
The Asterisk symbol is commonly used in the following contexts:
Footnote
Primary footnote marker.
Code
$x^*$Output
x*
Convolution
Convolution operation in signal processing.
Code
$(f * g)(t)$Output
(f * g)(t)
Complete Examples
Asterisk Usage
Asterisk for convolution
\documentclass{article}
\begin{document}
The convolution is defined as $(f * g)(t) = \int f(\tau) g(t - \tau) d\tau$.
\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:
- *: Asterisk symbol
- \ast: Math mode asterisk
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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