Code point
U+2A13
Glyph appearance depends on your fonts.
U+2A13
SmU+2A13 LINE INTEGRATION WITH SEMICIRCULAR PATH AROUND POLE is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Supplemental Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2A13
10771
⨓
⨓
⨓
E2 A8 93
2A13
00002A13
%E2%A8%93
\u2A13
\u2A13
\u2A13
\2A13