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⅀ Double-Struck N-Ary Summation

⅀

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Copy the same Unicode content as a raw character, U+ code point, HTML, JavaScript, CSS, Python or URL encoding.

Character⅀
UnicodeU+2140
Decimal8512
Hex0x2140
HTML decimal⅀
HTML hex⅀
JavaScript\u2140
CSS\2140
Python\u2140
URL%E2%85%80

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Unicode information

NameDouble-Struck N-Ary Summation
Unicode nameDOUBLE-STRUCK N-ARY SUMMATION
Code pointU+2140
HTML decimal⅀
HTML hex⅀
CSS\2140
JavaScript\u2140
CategoryMath
Unicode18.0

Unicode context

BlockLetterlike SymbolsExplore this group →ScriptCommonExplore this group →PlaneBasic Multilingual PlaneExplore this group →

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Meaning of ⅀ Double-Struck N-Ary Summation

The ⅀ character is listed as Double-Struck N-Ary Summation in SymbolDex. Its technical Unicode name is DOUBLE-STRUCK N-ARY SUMMATION. 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-Struck N-Ary Summation, then double-click it to insert the character.

Microsoft Word

Type 2140 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 2140, 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\2140
JavaScript\u2140
Python\u2140
Unicode text⅀

Usage examples

⅀ — Double-Struck N-Ary Summation
Unicode: U+2140
HTML: ⅀

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