LaTeX Real Numbers (ℝ) - Complete Guide
The real numbers symbol (ℝ) represents the set of all real numbers.
Symbol Preview
Real Numbers
LaTeX Code
Requires: \usepackage{cmd.package}
\mathbb{R}Real numbers set
What is the LaTeX Real Numbers?
The set of real numbers includes all rational and irrational numbers, including positive, negative, and zero.
How to Use Real Numbers in LaTeX
Method 1: Using \mathbb{R}
⚠️Required Package:
\usepackage{cmd.package}Real numbers set
Example: Using \mathbb{R}
\documentclass{article}
\usepackage{amssymb}
\begin{document}
% Using the Real Numbers
Text with \mathbb{R}
\end{document}Common Use Cases
The Real Numbers symbol is commonly used in the following contexts:
Real Number Set
Denoting domain or codomain.
Code
$f: \mathbb{R} \to \mathbb{R}$Output
f: ℝ → ℝ
Complete Examples
Real Numbers in Functions
Function with real numbers
\documentclass{article}
\usepackage{amssymb}
\begin{document}
Define $f: \mathbb{R} \to \mathbb{R}$ by $f(x) = x^2$.
\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:
- \mathbb{R}: Real numbers set
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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