Left Tack (⊣) is the Mathematical Operators character at Unicode U+22A3 (LEFT TACK). It is used in logic and proof theory — the left-facing counterpart of the right tack (⊢).
Remember
Character ⊣
Unicode U+22A3
Hex entity ⊣
Decimal ⊣
Named entity ⊣
CSS escape \22A3
Not the same ⊢ (⊢) · Left Tack Below (U+0318)
All of these produce the same glyph: ⊣. Prefer ⊣ when you want an explicit entity.
Using Hex Code: ⊣
Using HTML Code: ⊣
Using Named Entity: ⊣
Using CSS Entity: ⊣
A ⊣ B
How It Works
1. Hex:U+22A3 → ⊣ in HTML. The browser turns it into ⊣.
2. Decimal: same code point as 8867 → ⊣. Same result as hex.
3. Named:⊣ is the HTML5 name for this character.
4. CSS: use \22A3 in content (not an HTML entity). #point::after appends that ⊣ after the paragraph text.
Pitfalls & Tips
Common mistakes when working with Left Tack.
Look-alikes
⊣ ≠ ⊢
⊣ faces left. ⊢ faces right. Pick the code point your notation needs.
Name
⊣ ≠ ⊢
The names are mirror images of each other — easy to swap by mistake.
Combining
Not a diacritic
U+22A3 is a spacing math operator. For a mark under a letter, use Left Tack Below (U+0318).
CSS vs HTML
Do not mix escapes
\22A3 belongs in CSS. ⊣ / ⊣ / ⊣ belong in HTML.
A11y
Add nearby words
Pair the glyph with label text (for example A ⊣ B) or use aria-label when it stands alone.
Semicolon
End references
Always finish with ; — write ⊣, not &dashv.
Compatibility
Browser Support
Left Tack (U+22A3) and its entity forms (⊣, ⊣, ⊣, CSS \\22A3) are supported in all modern browsers. Glyph coverage depends on the font.
✓ Universal encoding
Left Tack (⊣)
Encode with named, hex, decimal, or CSS escape — or type ⊣ directly in UTF-8 HTML.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerIE 9+
Yes*
U+22A3 / ⊣Full support
Bottom line: Prefer ⊣ for readable HTML. Use \\22A3 only inside CSS content.
Use ⊣ (named), ⊣ (hex), ⊣ (decimal), or the CSS escape \22A3 in the content property. You can also type ⊣ directly in UTF-8 HTML.
U+22A3 (LEFT TACK). Hex 22A3, decimal 8867. It belongs to the Mathematical Operators block (U+2200–U+22FF).
Yes. ⊣ is the HTML5 named entity. You can also use ⊣ or ⊣.
Use it in logic, proof theory, and mathematical notation for a left tack (sometimes called a reverse turnstile). Prefer ⊣ for readable HTML.
HTML entities (⊣, ⊣, or ⊣) go in markup. The CSS escape \22A3 is used in stylesheets (usually in the content property of ::before/::after). Both render ⊣.
⊢ (U+22A2) is RIGHT TACK. ⊣ (U+22A3) is LEFT TACK — the mirrored form. They are not interchangeable.
🤔
Did you know?
Left Tack is Unicode U+22A3 (decimal 8867) — LEFT TACK. HTML5 provides ⊣. Prefer it for readable source. Do not confuse it with the right tack ⊢ (U+22A2) or the combining mark Left Tack Below (U+0318).
