U+22D0 "⋐" Double Subset Unicode Character
Unicode Version 17.0
⋐
U+22D0 "⋐" Double Subset is a mathematical symbol used primarily in set theory to denote a stronger or more specific form of the subset relation, often interpreted as "double subset" or "subset with a double line." It is typically employed to indicate that one set is a subset of another in a particularly strict or defined context, such as in proofs or formal logic, and it visually resembles two nested "⊂" symbols. This character is part of the Mathematical Operators block in Unicode, included to support precise mathematical notation in digital text.
General Properties
| Code Point | U+22D0 |
| Version Added | 1.1 |
| Name | Double Subset |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "⋑" U+22D1 Double Superset |
Encodings
| HTML Decimal Encoding | ⋐ |
| HTML Hex Encoding | ⋐ |
| UTF-8 Encoding | 0xE2 0x8B 0x90 |
| UTF-16 Encoding | 0x22D0 |
| UTF-32 Encoding | 0x000022D0 |
| C/C++/Java Escape | \u22d0 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |