Empty Set With Left Arrow Above Symbol
⦴ is the empty set symbol with a left arrow above, used mainly as a specialized mathematical notation.
U+29B4
⦴ (Unicode U+29B4) is a math symbol named “empty set with left arrow above.” It’s uncommon in everyday writing, but it can be useful in formal notation and document markup. Use the copy options below to insert it reliably in text, design files, and code.
Empty Set With Left Arrow Above Symbol Meaning
The symbol ⦴ is officially named “EMPTY SET WITH LEFT ARROW ABOVE” (U+29B4). In mathematical writing, an “empty set” indicates that a set has no elements. The added left arrow above suggests an operation or directional relation combined with the empty-set concept. Because this is a niche Unicode character, its exact interpretation can depend on the author’s notation conventions (for example, in specific frameworks, textbooks, or diagrams). When you use ⦴, it’s a good idea to ensure your surrounding context or legend clearly explains the intended meaning so readers interpret it consistently.
Common uses
- •Math documents to denote an empty set along with a directional or transitional annotation
- •Academic notes and lecture slides where a specialized notation needs to be preserved exactly
- •Typesetting symbols in LaTeX/Unicode-based workflows for specific set/arrow semantics
- •Designing math-infographics or diagrams that require consistent Unicode symbols
- •Programming or templating where Unicode glyphs must match a defined character (U+29B4)
Examples
⦴ Empty set with left arrow above
- ⦴Let ⦴ be the empty collection indicated for the left-direction condition.
- ⦴We write ⦴ to mark that no elements satisfy the given constraint.
- ⦴In the diagram, the left-arrowed empty set is shown by ⦴.
- ⦴The notation ⦴ appears in this proof to represent a restricted empty set.
- ⦴Use ⦴ when your specification includes an empty set with a leftward marker.
Variations
Ready to copy
Technical codes
| Unicode | U+29B4 | |
| HTML Entity | ⦴ | |
| HTML Code | ⦴ | |
| CSS | \29B4 | |
| Alt Code | Alt + 10676 | |
| Decimal | 10676 |
How to type Empty Set With Left Arrow Above Symbol (⦴)
On Windows
Hold Alt and type 10676 on the numeric keypad. In Word, type 29B4 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 29B4. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 29b4, then press Enter or Space.
Anywhere
Copy ⦴ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Empty Set With Left Arrow Above symbol mean?
The symbol ⦴ is officially named “EMPTY SET WITH LEFT ARROW ABOVE” (U+29B4). In mathematical writing, an “empty set” indicates that a set has no elements. The added left arrow above suggests an operation or directional relation combined with the empty-set concept. Because this is a niche Unicode character, its exact interpretation can depend on the author’s notation conventions (for example, in specific frameworks, textbooks, or diagrams). When you use ⦴, it’s a good idea to ensure your surrounding context or legend clearly explains the intended meaning so readers interpret it consistently.
What is the Unicode code point for ⦴?
The symbol ⦴ is Unicode U+29B4 (Unicode name: EMPTY SET WITH LEFT ARROW ABOVE).
How can I copy ⦴ into my text or design software?
Copy the character directly from this page, or use the provided HTML entity (⦴) / CSS escape (\\29B4) / JavaScript escape (\\u{29B4}).
Does ⦴ have a standard meaning everywhere?
It is an “empty set” with a left arrow above, but the precise interpretation can depend on the author’s notation conventions and surrounding context.
Will the symbol display correctly across devices?
It should display when the chosen font supports the character. If it shows as a box, switch to a Unicode-capable math font.