Empty Set vs Union
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VS
Property Comparison
| Property | ∅ 2205 | ∪ 222A |
|---|---|---|
| Name | Empty Set | Union |
| Category | Math Symbols | Math Symbols |
| Block | Mathematical Operators | Mathematical Operators |
| Script | Zyyy | Zyyy |
| General Category | Math Symbol (Sm) | Math Symbol (Sm) |
| Bidirectional | ON | ON |
Encoding Comparison
| Format | 2205 | 222A |
|---|---|---|
| Unicode | U+2205 | U+222A |
| HTML Decimal | ∅ | ∪ |
| HTML Hex | ∅ | ∪ |
| CSS | \2205 | \222A |
| JavaScript | \u{2205} | \u{222A} |
| Python | \u2205 | \u222a |
| UTF-8 | e2 88 85 | e2 88 aa |
How to Distinguish
Both Empty Set and Union belong to the Math Symbols category and the Mathematical Operators block. Compare their codepoints and visual rendering to distinguish them.
Tip: Paste the character into a hex editor or use
charCodeAt()
in JavaScript to check the actual codepoint.