U+2AA1 "⪡" Double Nested Less-Than Unicode Character
Unicode Version 17.0
⪡
U+2AA1 "⪡" Double Nested Less-Than is a mathematical symbol used primarily in formal logic, abstract algebra, and order theory to denote a stronger or iterated relation of "less than," often indicating a much smaller order of magnitude or a strict ordering that is significantly more restrictive than a single less-than sign. It can represent a double inequality where one value is far smaller than another, or in some notations, a specialized comparison within partially ordered sets or nonstandard analysis. Visually composed of two stacked less-than signs, it extends the basic comparison symbol to convey a more emphatic or nested relational meaning distinct from its single counterpart.
General Properties
| Code Point | U+2AA1 |
| Version Added | 3.2 |
| Name | Double Nested Less-Than |
| Block | Supplemental Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "⪢" U+2AA2 Double Nested Greater-Than |
Encodings
| HTML Decimal Encoding | ⪡ |
| HTML Hex Encoding | ⪡ |
| UTF-8 Encoding | 0xE2 0xAA 0xA1 |
| UTF-16 Encoding | 0x2AA1 |
| UTF-32 Encoding | 0x00002AA1 |
| C/C++/Java Escape | \u2aa1 |
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 |