# \Omega

The Ω symbol (Greek capital letter omega, U+03A9), written as \Omega in LaTeX math mode.

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

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Greek letters](https://texform.dev/latex/topics/greek) |
| Packages | base |
| Allowed mode | math |
| Glyph | Ω |
| Unicode | U+03A9 GREEK CAPITAL LETTER OMEGA |
| Delimiter | No |

## Syntax

```latex
\Omega
```

Takes no arguments.

## Common tasks

### How to write a capital omega

```latex
\Omega
```

[Open in Playground](https://play.texform.dev/?input=%5COmega)

### How to write a sample space

```latex
\omega\in\Omega
```

[Open in Playground](https://play.texform.dev/?input=%5Comega%5Cin%5COmega)

### How to write an ohm-like unit

```latex
R=10\,\Omega
```

[Open in Playground](https://play.texform.dev/?input=R%3D10%5C%2C%5COmega)

## Usage frequency

4.22% of formulas in the measured corpus contain this entry, rank 24 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+03A9 (GREEK CAPITAL LETTER OMEGA).