Code point
U+2206
Glyph appearance depends on your fonts.
U+2206
SmU+2206 INCREMENT is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2206
8710
∆
∆
E2 88 86
2206
00002206
%E2%88%86
\u2206
\u2206
\u2206
\2206