U+2138 "ℸ" Dalet Symbol Unicode Character
Unicode Version 17.0
ℸ
U+2138 "ℸ" Dalet Symbol is a typographic and scientific notation glyph representing the fourth letter of the Hebrew alphabet, dalet, used in contexts such as mathematics and logic as a symbol for the fourth element in a set or sequence. It is part of the Letterlike Symbols block in Unicode, designed to distinguish it from regular alphabetical characters for specialized uses, including in some forms of symbolic logic or as a notation in Talmudic and Kabbalistic references. The symbol carries the same sound value as the English "d" and maintains a visual connection to its Hebrew script origin, with a distinctive angular shape featuring a diagonal stroke.
General Properties
| Code Point | U+2138 |
| Version Added | 1.1 |
| Name | Dalet Symbol |
| Unicode 1.0 Name | Fourth Transfinite Cardinal |
| Block | Letterlike Symbols |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "ד" U+05D3 Hebrew Letter Dalet |
Encodings
| HTML Decimal Encoding | ℸ |
| HTML Hex Encoding | ℸ |
| UTF-8 Encoding | 0xE2 0x84 0xB8 |
| UTF-16 Encoding | 0x2138 |
| UTF-32 Encoding | 0x00002138 |
| C/C++/Java Escape | \u2138 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ד" U+05D3 Hebrew Letter Dalet |
| NFKC Simple Casefold | "ד" U+05D3 Hebrew Letter Dalet |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Math | Yes |
| Other Math | Yes |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | OLetter |