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SYMBOL

Double Superset

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Unicode information

NameDouble Superset
Unicode nameDOUBLE SUPERSET
Code pointU+22D1
HTML decimal⋑
HTML hex⋑
CSS\22d1
JavaScript\u22D1
CategoryMath
Unicode17.0

Meaning of ⋑ Double Superset

The character is listed as Double Superset in SymbolDex. Its technical Unicode name is DOUBLE SUPERSET. It is associated with mathematical notation; its exact function depends on the formula or notation system in which it appears.

Common uses

  • Mathematical formulas and expressions.
  • Scientific, technical or educational documentation.
  • Unicode text that requires this specific notation.

How to type ⋑ on Windows, Mac and mobile

Windows

The universal method is to use Copy on this page and paste ⋑. On Windows 10/11 you can press Win + . and browse the Symbols section, or open Character Map (charmap) to locate characters supported by your fonts.

Mac

Press Control + Command + Space to open Character Viewer, search for Double Superset, then double-click it to insert the character.

Microsoft Word

Type 22D1 without U+, then immediately press Alt + X. Word converts the code into ⋑. You can also use Insert → Symbol.

Google Docs

Open Insert → Special characters and search by name, or paste ⋑ directly. For emoji, you can also use your operating system emoji picker.

iPhone / iPad

iOS does not provide a direct Unicode-code entry method for every symbol. Copy ⋑ from SymbolDex or check long-press variants on related keys. For frequent use, create a shortcut under Settings → General → Keyboard → Text Replacement.

Android

Availability varies by Android keyboard. In Gboard, browse the symbols panel and long-press related keys for variants. If it is not available, copy ⋑ from SymbolDex and paste it where needed.

Linux

In many Linux apps using GTK/IBus, press Ctrl + Shift + U, type 22d1, then confirm with Enter or Space. If your app does not support this method, copy and paste ⋑.

Web and programming codes

Copy the representation you need for HTML, CSS, JavaScript or Python. For emoji sequences, SymbolDex includes every code point in the correct order.

HTML decimal⋑
HTML hex⋑
CSS content\22d1
JavaScript\u22D1
Python\u22D1
Unicode text

Usage examples

⋑ — Double Superset
Unicode: U+22D1
HTML: ⋑

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