# \iota

The ι symbol (Greek small letter iota, U+03B9), written as \iota in LaTeX math mode.

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

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Greek letters](https://texform.dev/latex/topics/greek) |
| Packages | base |
| Allowed mode | math |
| Glyph | ι |
| Unicode | U+03B9 GREEK SMALL LETTER IOTA |
| Delimiter | No |

## Syntax

```latex
\iota
```

Takes no arguments.

## Usage frequency

0.32% of formulas in the measured corpus contain this entry, rank 93 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+03B9 (GREEK SMALL LETTER IOTA).