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⧟

double-ended multimap

Double-Ended Multimap

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⧟ is the mathematical sign for a double-ended multimap; the surrounding formula supplies its exact role. It also has a documented Orthodox church use as a marker for a double service.

Text symbol

What ⧟ means

⧟ is a specialist mathematical relation sign associated with a double-ended multimap. The surrounding notation tells you the exact role it plays in a formula.

A 2015 Unicode proposal documents the same shape in Nikita Syrnikov's Orthodox service notation, where it marks a double service in a system linked to Isidore Dolnitsky's 1899 Typicon, a book of church services. This records a use of the shape, not its origin.

Technical and niche; outside mathematics or specialist church notation, its meaning may not be clear.

What it means when someone sends it to you

2 readings

A mathematical relation; the surrounding notation determines its exact role.

Don't confuse it with

1

Questions people ask

1

Why does ⧟ look different in different apps?

The app's font determines its drawing. If the font lacks this glyph, you may see an empty box or a fallback shape.

How to type or find ⧟

Search it as
multimap · multimap symbol · double-ended relation · typicon mark · arsenic symbol
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 29DF, then AltX to get ⧟.
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 “double-ended multimap”.
Linux
⎈Ctrl+⇧Shift+UType 29df, then Enter or Space.
HTML
⧟
CSS
\29DF
Windows (Word)
Type 29DF, then press AltX to convert the hexadecimal code.
Linux
Press CtrlShiftU, enter 29DF, then press Enter.
Codes and encoding1 code points
HTML decimal
⧟
HTML hex
⧟
CSS content
content: "\29DF";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A7%9F
1
On screen
1
Code points
1
JS .length
3
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