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𝐡

mathematical bold small h

Mathematical Bold Small H

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In LaTeX math mode, \mathbf{h} typesets a mathematical bold h. In a formula, 𝐡 is a distinct variable; physics and engineering may use bold letters for vectors.

Text symbol

What 𝐡 means

In LaTeX math mode, write \mathbf{h}. This typesets h as mathematical bold without requiring the standalone character.

What does 𝐡 mean in math?

It names a variable; its formula defines its role. In physics and engineering, bold letters can mark vectors—quantities with size and direction.

Earlier Unicode included a small set of specially styled mathematical letters. It expanded them into full alphabets so formulas could preserve style distinctions in plain text.

Why can 𝐡 become plain h?

Compatibility normalization can turn it into h. NFKC and NFKD are text-processing forms that map mathematical bold letters to base Latin letters. That can erase a distinction an equation needs.

Part of the collection

What it means when someone sends it to you

2 readings

A defined variable; in physics or engineering, bold letters can mark vectors.

Don't confuse it with

1

Questions people ask

1

Why does 𝐡 show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type or find 𝐡

Search it as
bold h · math bold h · unicode bold h · fancy h
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 1D421, then AltX to get 𝐡.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “mathematical bold small h”.
Linux
⎈Ctrl+⇧Shift+UType 1d421, then Enter or Space.
HTML
𝐡
CSS
\1D421
LaTeX
In math mode, use \mathbf{h} to typeset a bold mathematical variable.
Rich-text editor
For emphasis in a word, apply the editor's bold style to ordinary h; this character is separate.
Codes and encoding1 code points
HTML decimal
𝐡
HTML hex
𝐡
CSS content
content: "\1D421";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9D%90%A1
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Letters1,265 symbols

Fancy letters996 symbols