∅

Empty Set

Unicode: U+2205

HTML: ∅

About this Symbol

The Empty Set symbol (∅) is a Unicode character with code point U+2205. It belongs to the Set Theory category of Unicode symbols.

Usage Examples

  • Plain text: ∅
  • HTML: ∅
  • Unicode: U+2205

How to Type

Windows

Hold Alt and type 8709 on the numeric keypad.

macOS

Press Command + Control + Space to open the Character Viewer, then search for "Empty Set".

Related Symbols

∈ ∉ ∋ ∌ ∩ ∪