# ∅ U+2205 EMPTY SET

Circle with a diagonal slash, the empty set or null set in math, also a null morpheme in linguistics.

| | |
|---|---|
| Character | `∅` |
| Codepoint | U+2205 |
| Name | EMPTY SET |
| Also known as | null set |
| Block | [Mathematical Operators](https://unicodekit.com/block/mathematical-operators) |
| Script | Common |
| Category | Math Symbol (Sm) |
| Unicode version | 1.1 |
| HTML | `∅` `∅` |
| CSS | `\2205` |
| JavaScript | `\u2205` |
| UTF-8 | E2 88 85 |
| UTF-16 | 2205 |

## Notes

- used in linguistics to indicate a null morpheme or phonological "zero"

## Related characters

- ∄ [U+2204 THERE DOES NOT EXIST](https://unicodekit.com/char/2204)
- ∆ [U+2206 INCREMENT](https://unicodekit.com/char/2206)
- ∃ [U+2203 THERE EXISTS](https://unicodekit.com/char/2203)
- ∇ [U+2207 NABLA](https://unicodekit.com/char/2207)
- ∂ [U+2202 PARTIAL DIFFERENTIAL](https://unicodekit.com/char/2202)
- ∈ [U+2208 ELEMENT OF](https://unicodekit.com/char/2208)
- ∁ [U+2201 COMPLEMENT](https://unicodekit.com/char/2201)
- ∉ [U+2209 NOT AN ELEMENT OF](https://unicodekit.com/char/2209)
- ∀ [U+2200 FOR ALL](https://unicodekit.com/char/2200)
- ∊ [U+220A SMALL ELEMENT OF](https://unicodekit.com/char/220A)
- ∋ [U+220B CONTAINS AS MEMBER](https://unicodekit.com/char/220B)
- ∌ [U+220C DOES NOT CONTAIN AS MEMBER](https://unicodekit.com/char/220C)

Page: https://unicodekit.com/char/2205 · JSON: https://unicodekit.com/characters/2205