# \delta

The δ symbol (Greek small letter delta, U+03B4), written as \delta in LaTeX math mode.

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

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Greek letters](https://texform.dev/latex/topics/greek) |
| Packages | base |
| Allowed mode | math |
| Glyph | δ |
| Unicode | U+03B4 GREEK SMALL LETTER DELTA |
| Delimiter | No |

## Syntax

```latex
\delta
```

Takes no arguments.

## Common tasks

### How to write a small delta

```latex
\delta
```

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

### How to write a Kronecker delta

```latex
\delta_{ij}
```

[Open in Playground](https://play.texform.dev/?input=%5Cdelta_%7Bij%7D)

### How to write a variation

\delta is the small letter; \partial is the partial-derivative glyph.

```latex
\delta S = 0
```

[Open in Playground](https://play.texform.dev/?input=%5Cdelta+S+%3D+0)

## Usage frequency

6.86% of formulas in the measured corpus contain this entry, rank 12 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+03B4 (GREEK SMALL LETTER DELTA).