∅ Empty set
∅ is the empty set, Unicode U+2205, from the maths symbols. Copy and paste it, or type it with its HTML or CSS code.
∅
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About it
- Name: Empty set
- Group: Maths
- Unicode: U+2205
- HTML:
∅or∅ - CSS:
content: "\2205" - JavaScript:
\u2205
It is plain text, so it pastes into any app, chat, document or social post, and shows in whatever font is around it.