U+2230 "∰" Volume Integral Unicode Character
Unicode Version 17.0
∰
U+2230 "∰" Volume Integral is a mathematical symbol used to denote integration over a three dimensional volume in calculus, specifically representing the summation of a function's values throughout a volumetric region in space. This symbol, which consists of a triple integral sign with a single circle indicating the closed nature of the volume's boundary, is commonly employed in fields such as physics and engineering when applying the divergence theorem or computing quantities like mass, charge, or flux within a defined closed volume.
General Properties
| Code Point | U+2230 |
| Version Added | 1.1 |
| Name | Volume Integral |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Decomposition Type | Compat |
| Decomposition Mapping | "∮" U+222E Contour Integral "∮" U+222E Contour Integral "∮" U+222E Contour Integral |
Encodings
| HTML Decimal Encoding | ∰ |
| HTML Hex Encoding | ∰ |
| UTF-8 Encoding | 0xE2 0x88 0xB0 |
| UTF-16 Encoding | 0x2230 |
| UTF-32 Encoding | 0x00002230 |
| C/C++/Java Escape | \u2230 |