Set of real number is represented by the ℝ symbol. For this, you need to pass the argument R
in \mathbb
command in latex.
Symbol | Real numbers |
---|---|
Type | Set symbol |
Package | asmmath,… etc |
Command | \mathbb{R} |
Example | \mathbb{R} → ℝ |
In latex, this \mathbb
command is located in more than one package. So, you look at this table below
amsfonts | \mathbb{R} → |
amssymb | \mathbb{R} → |
txfonts | \mathbb{R} → |
pxfonts | \mathbb{R} → |
Real number symbol structure is the same for amsfonts
and amssymb
packages but slightly different for txfonts
and pxfonts
packages.
\documentclass{article}
\usepackage{amsfonts}
\begin{document}
\[ a,b\in\mathbb{R} \]
\end{document}
Output :
Real part from complex number in LaTeX
A complex number is made up of two parts, real and complex. And the real part is identified by the ℜ(z) symbol. By default, the \Re(z)
command is used to define this ℜ(z) symbol
\documentclass{article}
\begin{document}
\[ z=a+ib \]
\[ \Re(z) = a \]
\end{document}
Output :
You can denote real part symbols using more different methods instead of the default method in latex. For example
1. Using a physics
package that contains \Re
command to denote the real part. And \Re
command return Re(z) symbol instead of ℜ(z) symbol.
\documentclass{article}
\usepackage{physics}
\begin{document}
\[ z = a+ib \]
\[ \Re(z) = a \]
\end{document}
Output :
2. Secondly, you use the amsmath
package. And re syntax must be passed into the \operatorname
command.
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[ z = a+ib \]
\[ \operatorname{Re}(z) = a \]
\end{document}
Output :
3. Thirdly being amsfonts
can be used to present the \mathfrak
command. And you can pass both R
and Re
as arguments in this \mathfrak
command.
\documentclass{article}
\usepackage{amsfonts}
\begin{document}
\[ z = a+ib \]
\[ \mathfrak{R}(z) = a \]
\[ \mathfrak{Re}(z) = a \]
\end{document}
Output :
If you look at the above outputs, you will understand that it is best to use Re(z) instead of ℜ(z) to denote the real part symbol. And for this, using the physics
package and \Re
command is the best practice.