Volume Integral
∰
Type it
| Unicode | U+2230 | |
|---|---|---|
| LaTeX | \oiiint | |
| HTML entity | ∰ | |
| Character | ∰ |
Meaning
A triple integral with a circle through it, marking integration over a closed volume. It is rare; most authors write an ordinary triple integral instead. In LaTeX, \oiiint needs a package such as esint. Compare with Triple Integral and Surface Integral.
How to read it
∰ f dV
is read “the closed volume integral of f d V”.