# How to Write the Double Up-Down Arrow Symbol (⇕) in LaTeX

In LaTeX, you can write the double up-down arrow symbol (⇕) using the `\Updownarrow`

command. This command is part of the `amsmath`

package, so you need to include this package in your LaTeX document.

The following examples show how to write the double up-down arrow symbol in LaTeX.

## How to Write the Double Up-Down Arrow Symbol in Text

We can use the `\Updownarrow`

command to write the double up-down arrow symbol in LaTeX document for text.

Suppose we want to write the double up-down arrow symbol in the text.

We can use the following LaTeX code to do so:

```
\documentclass{article}
\usepackage{amsmath}
\begin{document}
This is an example of using the double up-down arrow symbol: \( \Updownarrow \).
\end{document}
```

Output: 👇️

```
This is an example of using the double up-down arrow symbol: ⇕.
```

In this example, we use the `\Updownarrow`

command to display the double up-down arrow symbol in the document.

## How to Write the Double Up-Down Arrow Symbol in Mathematical Expressions

For mathematical expressions, we can use the `\Updownarrow`

command to ensure proper formatting.

Suppose we would like to write mathematical expressions that contain the double up-down arrow symbol.

We can use the following LaTeX code to do so:

```
\documentclass{article}
\usepackage{amsmath}
\begin{document}
An inline mathematical expression: \( a \Updownarrow b \).
A displayed mathematical expression:
\[
a \Updownarrow b
\]
\end{document}
```

Output: 👇️

```
a ⇕ b
```

In this example, we use the `\Updownarrow`

command to denote the double up-down arrow symbol in both inline and displayed mathematical expressions.

## Conclusion

We can use the `\Updownarrow`

command from the `amsmath`

package for both text and mathematical expressions.