Real number (ℝ) symbol in LaTeX

In this tutorial, you will learn how to get the real number symbol in LaTeX. I will show you different styles of real number symbols with different packages. You can try with the amssymb package and \mathbb{R} command.

\documentclass{article}
\usepackage{amssymb}
\begin{document}

\underline{Real number symbol with \texttt{amssymb} package}

\verb|$\mathbb{R}$| $\rightarrow$ $\mathbb{R}$

$\mathbb{R}\in \left[x_1,x_n\right]$

\end{document}

Output:

Real Number symbol with other packages

Also, there are a lot more packages that provide different styles of the Real Number symbol. Follow the table given below.

Package	Command	Output
amssymb	$\mathbb{R}$
txfonts	$\mathbb{R}$
txfonts	$\varmathbb{R}$
pxfonts	$\mathbb{R}$
bbold	$\mathbb{R}$
bbm	$\mathbbm{R}$
bbm	$\mathbbmss{R}$
bbm	$\mathbbmtt{R}$
dsserif	$\mathbb{R}$
None	$\Re$

Positive and Negative Real Number symbol

A positive Real Number is denoted by ℝ⁺ and a negative Real number symbol is denoted by ℝ^–. To get these symbols in LaTeX, you can use superscript. Let’s see an example for a better understanding.

\documentclass{article}
\usepackage{amssymb}
\begin{document}

\underline{Real number symbol with \texttt{amssymb} package}

\verb|$\mathbb{R}^+$| $\rightarrow$ $\mathbb{R}^+$

\verb|$\mathbb{R}^-$| $\rightarrow$ $\mathbb{R}^-$

\verb|$\mathbb{R}_+$| $\rightarrow$ $\mathbb{R}_+$

\verb|$\mathbb{R}_-$| $\rightarrow$ $\mathbb{R}_-$

\end{document}

Output: