Windows
2 options- In Word / Outlook: type 2205 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
Empty Set Symbol
A symbol from the Math Symbols collection. Click the symbol or the button below to copy.
- Symbol
- ∅
- Unicode
- U+2205
- HTML entity
- ∅
- Category
- Math Symbols
Export
Download Empty Set as SVG or PNG — or add a caption to make a labelled icon, badge or sticker.
Background
Previewtransparent background
Fill color applies to monochrome symbols; multicolor emoji keep their own colors. Add a circle/rounded background to make an app icon or avatar. Exports are self-contained; the SVG embeds the glyph's font. Without a background, exports are transparent.
40 of 96 in the math symbols collection
About the empty set symbol
The empty set symbol is a fundamental notation in set theory, representing a set that contains no elements. It is used throughout mathematics, particularly in logic, probability, and abstract algebra, to denote the absence of any members in a collection.
This character belongs to the Mathematical Operators block and is categorized as a math symbol, meaning it is intended for mathematical notation rather than general text. It has no emoji variant and is distinct from similar-looking characters like the Greek letter phi.
How to type Empty Set
Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.
macOS
2 options- Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2205.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2205, then press Enter or Space.
Copy in every format
Every form of this character — for HTML, CSS, JavaScript, URLs and more. Click any value to copy.
Related math symbols
Other math symbols you can copy and paste — explore similar Unicode characters from the same family.
- +Plus SignCopy the plus sign symbol→
- −Minus SignCopy the minus sign symbol→
- ×Multiplication SignCopy the multiplication sign symbol→
- ÷Division SignCopy the division sign symbol→
- ±Plus-Minus SignCopy the plus-minus sign symbol→
- ∓Minus-Or-Plus SignCopy the minus-or-plus sign symbol→
- =Equals SignCopy the equals sign symbol→
- ≠Not Equal ToCopy the not equal to symbol→
- ≈Almost Equal ToCopy the almost equal to symbol→
- ≡Identical ToCopy the identical to symbol→
- ≤Less-Than Or Equal ToCopy the less-than or equal to symbol→
- ≥Greater-Than Or Equal ToCopy the greater-than or equal to symbol→
Explore related collections
Browse other symbol families that pair well with math symbols.