Unicode Character 'EMPTY SET' (U+2205) |
  |
EMPTY SET
EMPTY SET
| Unicode Data | |
|---|---|
| Name | EMPTY SET |
| Block | Mathematical Operators |
| Category | Symbol, Math [Sm] |
| Script | Common (Zyyy) |
| Combine | 0 |
| BIDI | Other Neutrals [ON] |
| Index entries | EMPTY SET null set SET, EMPTY set, null |
| Comments | Formal Alias: null set used in linguistics to indicate a null morpheme or phonological "zero" |
| See Also | latin capital letter o with stroke U+00D8 diameter sign U+2300 |
| Variants | U+2205 U+FE00zero with long diagonal stroke overlay form |
| Version | Unicode 1.1.0 (June, 1993) |
| Encodings | |
|---|---|
| HTML Entity (decimal) | ∅ |
| HTML Entity (hex) | ∅ |
| HTML Entity (named) | ∅: ∅ ∅: ∅ ∅: ∅ ∅: ∅ |
| How to type in Microsoft Windows | Alt +2205 |
| UTF-8 (hex) | 0xE2 0x88 0x85 (e28885) |
| UTF-8 (binary) | 11100010:10001000:10000101 |
| UTF-16 (hex) | 0x2205 (2205) |
| UTF-16 (decimal) | 8,709 |
| UTF-32 (hex) | 0x00002205 (2205) |
| UTF-32 (decimal) | 8,709 |
| C/C++/Java source code | "\u2205" |
| Python source code | u"\u2205" |
| More... | |
| Java Data | |
|---|---|
| string.toUpperCase() | ∅ |
| string.toLowerCase() | ∅ |
| Character.UnicodeBlock | MATHEMATICAL_OPERATORS |
| Character.charCount() | 1 |
| Character.getDirectionality() | DIRECTIONALITY_OTHER_NEUTRALS [13] |
| Character.getNumericValue() | -1 |
| Character.getType() | 25 |
| Character.isDefined() | Yes |
| Character.isDigit() | No |
| Character.isIdentifierIgnorable() | No |
| Character.isISOControl() | No |
| Character.isJavaIdentifierPart() | No |
| Character.isJavaIdentifierStart() | No |
| Character.isLetter() | No |
| Character.isLetterOrDigit() | No |
| Character.isLowerCase() | No |
| Character.isMirrored() | No |
| Character.isSpaceChar() | No |
| Character.isSupplementaryCodePoint() | No |
| Character.isTitleCase() | No |
| Character.isUnicodeIdentifierPart() | No |
| Character.isUnicodeIdentifierStart() | No |
| Character.isUpperCase() | No |
| Character.isValidCodePoint() | Yes |
| Character.isWhitespace() | No |
