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⋐

double subset

Double subset

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⋐ is a double-subset relation sign in mathematics: it says the expression on the left is a subset of the one on the right. The doubled stroke alone does not say whether the relation is strict or has another special force; follow the author’s definitions.

Text symbol

What ⋐ means

⋐ is the double subset. Unicode classifies it as a mathematical symbol and files it in the Mathematical Operators block; this site shelves it under Maths.

Its appearance depends on the font and text styling.

How it is encoded

⋐ is a single code point, U22D0. In HTML that is ⋐, and in CSS \22D0.

Don't confuse it with

1

Questions people ask

1

Why does ⋐ 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 ⋐

Search it as
subset relation · subset with two curves · Subset LaTeX command
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 22D0, 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 subset”.
Linux
⎈Ctrl+⇧Shift+UType 22d0, then Enter or Space.
HTML
⋐
CSS
\22D0
LaTeX
Use \Subset in math mode and load \usepackage{amssymb} in the preamble.
Codes and encoding1 code points
HTML decimal
⋐
HTML hex
⋐
CSS content
content: "\22D0";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%8B%90
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