Z Notation Domain Antirestriction Symbol
⩤ is the Z Notation domain antirestriction symbol (Unicode U+2A64).
U+2A64
⩤ is a specialist mathematical symbol from Z Notation. It appears in formal specifications to describe operations related to a function’s domain. Use the Unicode character or the provided HTML/CSS/JavaScript escapes for reliable rendering.
Z Notation Domain Antirestriction Symbol Meaning
⩤ is named “Z Notation domain antirestriction” (Unicode U+2A64). In Z Notation, operations are used to manipulate functions and relations in a way that is precise for formal reasoning. “Domain” indicates that the operation concerns where a mapping is defined, while “antirestriction” describes an inverse-style adjustment compared with restriction. In practice, this symbol is mostly encountered in specification texts, logic-heavy documentation, and formal methods materials. If you work with Z Notation, this character helps you keep your written formal models consistent and machine-checkable when copied into editors, documentation, or code.
Common uses
- •Writing Z Notation specifications that adjust the effective domain of a function or relation
- •Documenting formal-methods algorithms in technical notes and papers
- •Building consistent mathematical notation in academic or engineering writing
- •Labeling expressions in diagram captions or specification summaries
- •Checking that Unicode-based typesetting matches the intended Z Notation operator
Examples
⩤ Z Notation Domain Antirestriction
- ⩤Let f ⩤ S denote the Z domain antirestriction of f by S.
- ⩤We compute g = f ⩤ D in the next proof step.
- ⩤The expression h = m ⩤ A is used to model domain adjustment.
- ⩤In the specification, ⩤ appears in the definition of the operator.
- ⩤When typesetting, ensure ⩤ is rendered as U+2A64.
Variations
Ready to copy
Technical codes
| Unicode | U+2A64 | |
| HTML Entity | ⩤ | |
| HTML Code | ⩤ | |
| CSS | \2A64 | |
| Alt Code | Alt + 10852 | |
| Decimal | 10852 |
How to type Z Notation Domain Antirestriction Symbol (⩤)
On Windows
Hold Alt and type 10852 on the numeric keypad. In Word, type 2A64 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2A64. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2a64, 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 Z Notation Domain Antirestriction symbol mean?
⩤ is named “Z Notation domain antirestriction” (Unicode U+2A64). In Z Notation, operations are used to manipulate functions and relations in a way that is precise for formal reasoning. “Domain” indicates that the operation concerns where a mapping is defined, while “antirestriction” describes an inverse-style adjustment compared with restriction. In practice, this symbol is mostly encountered in specification texts, logic-heavy documentation, and formal methods materials. If you work with Z Notation, this character helps you keep your written formal models consistent and machine-checkable when copied into editors, documentation, or code.
What is the Unicode code point for ⩤?
The Unicode code point for ⩤ is U+2A64.
How do I insert ⩤ in HTML?
Use the HTML entity: ⩤
What is the CSS escape for this character?
The CSS escape is: \\2A64
Where would I see ⩤ used?
It’s used in Z Notation to represent domain antirestriction in formal specifications.