U+2A12 "⨒" Line Integration with Rectangular Path Around Pole Unicode Character
Unicode Version 17.0
⨒
U+2A12 "⨒" Line Integration with Rectangular Path Around Pole is a mathematical symbol used primarily in complex analysis and potential theory to denote a line integral taken over a rectangular contour that encircles a singular point, or pole. This specific notation visually combines an integral sign with a rectangular path indicator, helping to clarify that the integration path is a rectilinear loop designed to avoid or enclose a pole of the function being integrated. Its inclusion in the Unicode standard allows mathematicians and researchers to precisely typeset this specialized integral operator in digital documents without needing image-based workarounds.
General Properties
| Code Point | U+2A12 |
| Version Added | 3.2 |
| Name | Line Integration with Rectangular Path Around Pole |
| Block | Supplemental Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
Encodings
| HTML Decimal Encoding | ⨒ |
| HTML Hex Encoding | ⨒ |
| UTF-8 Encoding | 0xE2 0xA8 0x92 |
| UTF-16 Encoding | 0x2A12 |
| UTF-32 Encoding | 0x00002A12 |
| C/C++/Java Escape | \u2a12 |
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 |