Double-struck N-ary Summation Letter
The symbol ⅀ (U+2140) is a double-struck n-ary summation character used in typographic and notation contexts.
U+2140
The ⅀ symbol is a decorative/stylized character from Unicode. It’s often used to represent a summation-style operator in text, mockups, and notation layouts. Use the copy options below to paste it into documents or code.
Double-struck N-ary Summation Letter Meaning
⅀ is the Unicode character named “DOUBLE-STRUCK N-ARY SUMMATION” (U+2140). As its name suggests, it’s used as a summation-like operator in mathematical or typesetting contexts, particularly where an “n-ary” summation concept is being indicated or where a double-struck typographic style is desired. Outside of formal math, designers and writers sometimes use it simply for its summation/operator look—such as in labels, diagrams, or UI elements—while keeping consistent typography by choosing the Unicode character rather than an image.
Common uses
- •Math notation in documents where a double-struck summation symbol is preferred
- •Designing posters, slide headings, or infographics that include operator-like glyphs
- •Building UI/UX labels for calculators, aggregators, or “total” displays
- •Using in technical writing to visually suggest “sum over many values”
- •Creating consistent typographic mockups for formulas and equations
Examples
⅀ Double-Struck N-ary Summation
- ⅀Compute: ⅀ x_i
- ⅀Total score: ⅀ scores
- ⅀Aggregated value = ⅀ v_k
- ⅀Let S = ⅀ a_n
- ⅀Contribution: ⅀ f(i)
Variations
Technical codes
| Unicode | U+2140 | |
| HTML Entity | ⅀ | |
| HTML Code | ⅀ | |
| CSS | \2140 |
FAQ
What does the Double-struck N-ary Summation letter mean?
⅀ is the Unicode character named “DOUBLE-STRUCK N-ARY SUMMATION” (U+2140). As its name suggests, it’s used as a summation-like operator in mathematical or typesetting contexts, particularly where an “n-ary” summation concept is being indicated or where a double-struck typographic style is desired. Outside of formal math, designers and writers sometimes use it simply for its summation/operator look—such as in labels, diagrams, or UI elements—while keeping consistent typography by choosing the Unicode character rather than an image.
What Unicode character is ⅀?
⅀ is the Unicode character U+2140, named “DOUBLE-STRUCK N-ARY SUMMATION”.
How do I copy ⅀ into HTML?
You can use the HTML entity ⅀ or the numeric code reference ⅀.
How can I include ⅀ in CSS or code as an escape?
Use CSS escape \\2140. For JavaScript, you can use \\u{2140}.
Why use ⅀ instead of typing a regular “sum” word?
Using the actual Unicode glyph keeps the look consistent across platforms and helps when you’re typesetting or designing equation-like text.