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𝚞

mathematical monospace small u

Mathematical Monospace Small U

𝚞 is the mathematical monospace u: a fixed-width form of lowercase Latin u. In formulas, letter style can distinguish one variable from another, but the formula decides what this u stands for. For ordinary words, use text formatting instead.

Text symbol

What 𝚞 means

In formulas, it marks a lowercase u in monospace style.

Monospace means each character takes the same horizontal width. The formula supplies the letter's meaning; this character does not name one fixed quantity.

Why is this a separate character?

In math, letter style can change which variable is meant.

In 1998, a proposal linked to the Scientific and Technical Information Exchange (STIX), a scientific publishing project, recorded that mathematical font variants were already used to distinguish symbols and argued that they should survive in plain text. It included a monospace alphabet.

Technical and mathematical: in a formula, its style can distinguish it from other variables.

For ordinary words, use font formatting; Unicode intends these mathematical letters for mathematical or technical notation.

Part of the collection

𝚃

Monospace Text (Typewriter Letters)

Don't confuse it with

Greek Small Letter Upsilon

It looks like u in many fonts, a homograph risk in spoofed text.

Armenian Small Letter Seh

It looks like u in some fonts, mostly a copy-paste mix-up.

ｕ

Fullwidth Latin Small Letter U

Fullwidth Latin small u, from East Asian input. It looks like u but is a separate character that search does not match.

Questions people ask

Why did 𝚞 turn into plain u?

It can happen when software applies NFKC, a text-normalization form that folds compatibility distinctions. It maps mathematical alphabet letters to their plain Latin bases.

Why does 𝚞 look different across apps?

It can: fonts and text engines vary in support for mathematical letters, so an app may substitute a fallback glyph or show a missing-character box.

How to type or find 𝚞

Search it as: monospace u · math monospace u · fixed width u · typewriter u
Shows up in: Anything that takes text · its shape is whatever your font draws

Windows (Word)

⎇Alt+XType 1D69E, then AltX to get 𝚞.

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 monospace small u”.

Linux

⎈Ctrl+⇧Shift+UType 1d69e, then Enter or Space.

HTML

𝚞

CSS

\1D69E

Hexadecimal Unicode input

In software with code-point entry, enter 1D69E; the keystroke depends on the app.

HTML source

In HTML markup, 𝚞 is the character reference for this letter.

Codes and encoding1 code points

HTML decimal

𝚞

HTML hex

𝚞

CSS content

content: "\1D69E";

Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.

URL encoded

%F0%9D%9A%9E

On screen

Code points

JS .length

UTF-8 bytes

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

Mathematical Monospace Small U