∯
∯
U+222F
,
∯
SURFACE INTEGRAL
←
∮
[U+222E]
Mathematical Operators
∰
→
[U+2230]
Translingual
Symbol
∯
(
mathematics
)
a
surface integral
over a
closed
surface (a
contour integral
over two variables).
Related terms
∫
∬
∭
⨌
∮
∰
∱
⨑
∲
∳
⨐