Code point
U+2AA1
Glyph appearance depends on your fonts.
U+2AA1
SmU+2AA1 DOUBLE NESTED LESS-THAN 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+2AA1
10913
⪡
⪡
⪡
E2 AA A1
2AA1
00002AA1
%E2%AA%A1
\u2AA1
\u2AA1
\u2AA1
\2AA1