# \unlhd

The ⊴ symbol (Normal subgroup of or equal to, U+22B4), written as \unlhd in LaTeX math mode.

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

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Binary operators](https://texform.dev/latex/topics/binary-operators) |
| Packages | ams |
| Allowed mode | math |
| Glyph | ⊴ |
| Unicode | U+22B4 NORMAL SUBGROUP OF OR EQUAL TO |
| Delimiter | No |

## Syntax

```latex
\unlhd
```

Takes no arguments.

## Usage frequency

<0.01% of formulas in the measured corpus contain this entry, rank 320 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+22B4 (NORMAL SUBGROUP OF OR EQUAL TO).

### [ams/unlhd-to-trianglelefteq](https://texform.dev/rules/ams/unlhd-to-trianglelefteq)

Collapse unlhd to the descriptive trianglelefteq character.

Level: authoring. Fidelity: render.

```latex
\unlhd
```

→

```latex
\trianglelefteq
```

```latex
A \unlhd B
```

→

```latex
A \trianglelefteq B
```