# \Updownarrow

The ⇕ symbol (Up down double arrow, U+21D5), written as \Updownarrow in LaTeX math mode.

https://texform.dev/latex/symbols/Updownarrow

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Delimiters](https://texform.dev/latex/topics/delimiters) |
| Packages | base |
| Allowed mode | math |
| Glyph | ⇕ |
| Unicode | U+21D5 UP DOWN DOUBLE ARROW |
| Delimiter |  |

## Syntax

```latex
\Updownarrow
```

Takes no arguments.

## Usage frequency

<0.01% of formulas in the measured corpus contain this entry, rank 337 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+21D5 (UP DOWN DOUBLE ARROW).