What ⨗ means
An integral whose extra arrow mark the author defines. The tall S-shape is the ordinary integral sign, which stands for summing a quantity continuously. Its Unicode neighbours add marks with fixed jobs ( marks anticlockwise integration, a finite-part integral), but ⨗ has no such standard definition. If you meet it in a paper, look for the author's note on notation.
It was encoded in Unicode 3.2 so that the full set of technical symbols from older typesetting standards could be written as real characters. Before that, MathML's 1998 character tables could only give it a private-use code, E39A, that worked in specific fonts. The entity name intlarhk is short for "integral, left arrow, hook".
Part of collections
Don't confuse it with
2
Related characters
1
Questions people ask
1Does ⨗ have a standard mathematical meaning?
No. Unlike the ordinary integral , it has no definition taught in standard courses; the author of a formula using it explains what the hooked arrow signifies.
More like this
10
How to type or find ⨗
- Also called
- intlarhk · hooked-arrow integral
- Search it as
- integral with hook arrow · integral arrow symbol · U+2A17 · hooked arrow integral · LaTeX intlarhk
- Shows up in
- Anything that takes text · its shape is whatever your font draws
⨗\2A17⨗ or ⨗.⨗ is not predefined in XML; use ⨗ or the character itself in <mo>⨗</mo>.unicode-math package (XeLaTeX or LuaLaTeX), use \intlarhk.2A17 then press AltX.Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.