Hermitian conjugate matrix (⊹) is the Unicode character at U+22B9 in Mathematical Operators. Official name: HERMITIAN CONJUGATE MATRIX. It is used for conjugate-transpose / Hermitian-adjoint style notation in linear algebra and quantum text.
Remember
Character ⊹
Unicode U+22B9
Named entity ⊹
Hex entity ⊹
Decimal ⊹
CSS escape \22B9
Meaning hermitian conjugate / conjugate transpose mark
Not the same † (†) · ⊗ (⊗) · ⊛ (⊛)
Prefer ⊹ in HTML. Hex ⊹, decimal ⊹, or typing ⊹ in UTF-8 also work. For footnotes, use †; for circled multiplication, prefer ⊗.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Named entity
⊹
HTML markup (preferred)
Hex entity
⊹
HTML markup
Decimal entity
⊹
HTML markup
Direct character
⊹
HTML text (UTF-8)
CSS escape
\22B9
Stylesheet content
When to Use Which
Situation
Use
Conjugate transpose / Hermitian adjoint operator mark
Built with Named: ⊹
Built with Hex: ⊹
Built with Decimal: ⊹
Built with CSS: ⊹
Typed: ⊹
A⊹
Footnote mark: †
How It Works
1. Named:⊹ is the preferred HTML form for U+22B9 → ⊹.
2. Hex / decimal:⊹ and ⊹ insert the same code point. Same visual as named.
3. CSS: use \22B9 in content (not an HTML entity). #point::after appends ⊹.
4. Typed: paste ⊹ in a UTF-8 document when you need this operator. Prefer aria-label or nearby prose such as “Hermitian conjugate” so meaning is clear to everyone.
Pitfalls & Tips
Common mistakes when working with hermitian conjugate matrix.
Name
Prefer ⊹
HTML5 defines ⊹ for U+22B9. Prefer it over inventing names like &herm;. Hex and decimal still work when needed.
†
Not the footnote dagger
† is † (U+2020). Some texts use † for adjoint, but the dedicated Hermitian conjugate matrix operator is ⊹ (⊹).
⊗
Not circled times
⊗ is ⊗ (U+2297). Related math look — different meaning (tensor / circled multiply vs. Hermitian conjugate mark).
Font
Font coverage
Some fonts omit Mathematical Operators. If ⊹ is missing, fall back to a math-capable font or spell out “Hermitian conjugate”.
CSS vs HTML
Do not mix escapes
\22B9 belongs in CSS strings. ⊹ / ⊹ / ⊹ belong in HTML.
a11y
Add accessible text
Screen readers may not announce ⊹ clearly. Prefer aria-label="Hermitian conjugate" or nearby prose for formulas.
Semicolon
End references
Always finish entities with ; — write ⊹, not &hercon.
Compatibility
Browser Support
Hermitian conjugate matrix (U+22B9) and its entity forms (⊹, ⊹, ⊹, CSS \\22B9) are supported in all mainstream browsers. Visible glyphs depend on Mathematical Operators font coverage.
✓ Universal support
Hermitian Conjugate Matrix (⊹)
Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+22B9Full support
Bottom line: Prefer ⊹ in HTML. Use ⊹ / ⊹ when numeric form is required, and \\22B9 only inside CSS content.
Use ⊹ (named), ⊹ (hex), ⊹ (decimal), type ⊹ directly in UTF-8, or the CSS escape \22B9 in content. Prefer ⊹ in normal HTML.
U+22B9 (HERMITIAN CONJUGATE MATRIX). Hex 22B9, decimal 8889. It belongs to the Mathematical Operators block (U+2200–U+22FF).
Yes. Use ⊹ — the preferred form in HTML markup. Numeric forms ⊹ and ⊹ also work.
Use it in linear algebra or quantum-style text for conjugate transpose / Hermitian adjoint operator notation. For footnote markers, use †. For tensor/circled multiplication, use ⊗.
HTML entities (⊹, ⊹, or ⊹) go in markup. The CSS escape \22B9 goes in stylesheet strings (usually content on ::before/::after).
No. Hermitian conjugate matrix is U+22B9 (⊹ / ⊹). Dagger is U+2020 († / †), often used for footnotes or informal adjoint notation. Circled times is U+2297 (⊗ / ⊗). Related math/punctuation — different glyphs and meanings.
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Did you know?
Hermitian conjugate matrix is Unicode U+22B9 (decimal 8889) — glyph ⊹ in Mathematical Operators (official name HERMITIAN CONJUGATE MATRIX). HTML5 names it ⊹. Prefer ⊹ in markup. It marks conjugate-transpose / Hermitian-adjoint style notation and is not the footnote dagger † (†) or circled times ⊗ (⊗).
