⊞
Unicode
U+229ELaTeX
\boxplusHTML entity
⊞HTML decimal
⊞MathML
<mo>⊞</mo>Semantic identity and intent
Characters to distinguish
- ⊕ — Direct Sum
Use ⊞ in the right format
Meaning and usage
Represents a direct, modular, or custom addition operation.
Do not assume it is ordinary addition; explain the algebraic structure or modular rule.
Pronunciation: squared plus operator
Formula examples
a⊞bHow to type Squared Plus Operator
- Windows
- Use Character Map or enter U+229E in a Unicode-aware application.
- macOS
- Open Character Viewer with Control–Command–Space and search by the symbol name.
- Microsoft Word
- In an equation, type \boxplus and press Space when Word supports the command.
- iPhone and iPad
- Copy and paste ⊞, or use a math/LaTeX app. The standard iOS keyboard may not expose every mathematical symbol.
- Android
- Copy and paste ⊞, or use a math keyboard or LaTeX editor. Keyboard layouts vary by device and app.
- Google Docs
- For plain text, paste ⊞ or use Insert → Special characters. For structured math, use the equation editor and verify \boxplus.
- Excel
- Paste ⊞ into a cell or use Insert → Symbol when available. Ordinary cells preserve the character but do not interpret LaTeX commands.
Common mistakes
- Preserve grouping, operator order, and spacing around ⊞; Do not assume it is ordinary addition; explain the algebraic structure or modular rule.
- For plain text, copy ⊞ as U+229E; for structured equations, use \boxplus in math mode. A look-alike glyph or image can break search, accessibility, or parsing when the intended character is Squared Plus Operator.
When to use ⊞
- Use ⊞ in plain text when a Unicode character is appropriate and the destination preserves U+229E.
- Use \boxplus in an equation editor when mathematical spacing or structure matters.
- Define the local meaning when Squared Plus Operator is used in functions operators, algebra with a field-specific convention.
Look-alikes and related characters
- ⊕ — Direct Sum
Font and compatibility notes
Glyph shape can vary by font. Verify the code point after copying, and prefer LaTeX or MathML for structured equations.
Continue the workflow
From Squared Plus Operator to a finished equation
- Copy the characterUse ⊞ in plain text when Unicode is accepted.
- Choose a structured formatUse
\boxplusfor LaTeX or the MathML snippet for accessible web equations. - Edit or convertOpen the value in the editor or converter without retyping it.
Review and source notes
Quality tier: specialist
Last reviewed: 2026-07-23
Review method: Catalog review of character identity and notation mappings.
Verified against: Unicode Standard, Unicode mathematical notation guidance, and established LaTeX/MathML syntax.
Reference sources
- The Unicode StandardUnicode Consortium — Character identity, encoding, names, and conformance.
- Unicode Character Code ChartsUnicode Consortium — Code points and official character charts.
Frequently asked questions
What does the Squared Plus Operator symbol mean?
Represents a direct, modular, or custom addition operation.
What is the LaTeX command for ⊞?
Use \boxplus in a compatible math environment.
Can I copy ⊞ as Unicode?
Yes. Use the copy button above to copy the Unicode character directly.