# \mu

The μ symbol (Greek small letter mu, U+03BC), written as \mu in LaTeX math mode.

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

## Metadata

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

## Syntax

```latex
\mu
```

Takes no arguments.

## Common tasks

### How to write a Greek mu

```latex
\mu
```

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

### How to write a mean

```latex
\mathbb{E}[X]=\mu
```

[Open in Playground](https://play.texform.dev/?input=%5Cmathbb%7BE%7D%5BX%5D%3D%5Cmu)

### How to write a reduced mass

```latex
\mu=\frac{m_1 m_2}{m_1+m_2}
```

[Open in Playground](https://play.texform.dev/?input=%5Cmu%3D%5Cfrac%7Bm_1+m_2%7D%7Bm_1%2Bm_2%7D)

## Usage frequency

8.14% of formulas in the measured corpus contain this entry, rank 8 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+03BC (GREEK SMALL LETTER MU).