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𞺮

arabic mathematical double-struck seen

Double-Struck Mathematical Sīn

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This is the double-struck mathematical form of the Arabic letter sīn (س), used as its own symbol in Arabic math equations. The equation gives it a value; the lettering alone does not.

Text symbol

What 𞺮 means

It marks a distinct letter in Arabic mathematics.

Arabic algebraic symbols were in use by the late 12th century. A North African system appears in the margins of a 1747 copy of an algebra treatise written in 1380. Arabic- and Persian-script math uses letter styles to distinguish symbols, but this glyph has no fixed value outside its equation.

Unlike ordinary Arabic letters, mathematical forms do not join neighboring letters. A font needs this separate glyph; otherwise, a missing-character box may appear.

Part of the collection

Who writes 𞺮

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Don't confuse it with

1

Questions people ask

1

Why does 𞺮 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 𞺮

Search it as
arabic math · arabic math symbol · double-struck seen · math seen · u+1eeae
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 1EEAE, then AltX to get 𞺮.
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 “arabic mathematical double-struck seen”.
Linux
⎈Ctrl+⇧Shift+UType 1eeae, then Enter or Space.
HTML
𞺮
CSS
\1EEAE
Microsoft Word
In Word, type 1EEAE and press Alt+X; select the code first if it touches other hex text (Microsoft documentation, 2026).
Codes and encoding1 code points
HTML decimal
𞺮
HTML hex
𞺮
CSS content
content: "\1EEAE";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9E%BA%AE
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

1

Maths & numbers1,835 symbols