N-ary Union Operator With Dot Symbol
⨃ is the N-ary union operator with dot, commonly used to denote a union over many sets in mathematical notation.
U+2A03
The symbol ⨃ is a mathematical operator used to express unions involving multiple sets. It’s useful when you want a clear, compact notation for combining many collections at once. This page helps you copy the character and use the right codepoints in text or code.
N-ary Union Operator With Dot Symbol Meaning
⨃ (U+2A03) is the “N-ary union operator with dot,” a math operator that signals a union over an arbitrary number of operands (often multiple sets). The operator form helps distinguish this “many-at-once” union from binary union notations. In documents, you may see it in definitions, set-theoretic expressions, or formal statements where the union is written compactly without repeatedly using a pairwise union operator. The “with dot” styling is part of the operator’s standard glyph design, intended to convey this specific N-ary union variant.
Common uses
- •Writing compact set-theory expressions for unions over many sets
- •Defining families of sets and expressing their combined union in one operator
- •Presenting formal logic or discrete math notation in reports and textbooks
- •Typing or rendering mathematical formulas in documents and slide decks
- •Labeling or describing aggregation steps in math-focused diagrams
Examples
⨃ N-ary Union Operator with Dot
- ⨃Let U = ⨃_{i=1}^{n} A_i.
- ⨃The set of reachable states is ⨃_{k=0}^{m} S_k.
- ⨃Define B = ⨃_{A \\in \\mathcal{F}} A.
- ⨃We write C = ⨃_{j \\in J} X_j for the union over all j.
- ⨃The overall region is ⨃_{t \\in T} R_t.
Variations
Ready to copy
Technical codes
| Unicode | U+2A03 | |
| HTML Entity | ⨃ | |
| HTML Code | ⨃ | |
| CSS | \2A03 | |
| Alt Code | Alt + 10755 | |
| Decimal | 10755 |
How to type N-ary Union Operator With Dot Symbol (⨃)
On Windows
Hold Alt and type 10755 on the numeric keypad. In Word, type 2A03 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2A03. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2a03, then press Enter or Space.
Anywhere
Copy ⨃ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the N-ary Union Operator With Dot symbol mean?
⨃ (U+2A03) is the “N-ary union operator with dot,” a math operator that signals a union over an arbitrary number of operands (often multiple sets). The operator form helps distinguish this “many-at-once” union from binary union notations. In documents, you may see it in definitions, set-theoretic expressions, or formal statements where the union is written compactly without repeatedly using a pairwise union operator. The “with dot” styling is part of the operator’s standard glyph design, intended to convey this specific N-ary union variant.
How do I type or copy the symbol ⨃?
Copy it directly from this page. For programming, use the codepoint U+2A03 or the provided escapes (CSS: \\2A03, JavaScript: \\u{2A03}).
What is ⨃ used for in math?
It’s an N-ary union operator with dot, used to denote a union over an arbitrary number of operands (often many sets).
Is ⨃ the same as the usual union symbol?
It’s related, but ⨃ specifically denotes the N-ary union operator with dot, which is meant for many-at-once union notation rather than a simple binary union.
What’s the Unicode information for ⨃?
Unicode name: N-ARY UNION OPERATOR WITH DOT. Codepoint: U+2A03. HTML entity: ⨃. CSS escape: \\2A03. JavaScript escape: \\u{2A03}.