What ⇇ means
The formula’s labels and conventions tell you how to read the pair. The name “leftwards paired arrows” describes its shape, not a mathematical operation. Check the surrounding expression to see what relation the author assigns it.
Category theory, the study of mathematical structures and their relationships, uses the LaTeX command \leftleftarrows in formal diagrams. The other objects, labels, and arrows establish the pair’s role.
Technical and mathematical; outside a formula, it reads as two arrows pointing left.
Do not substitute ⇇ for ; the signs have different directions and roles.
Part of the collection
What it means when someone sends it to you
2 readingsTwo arrows pointing left; any more specific relation comes from the surrounding text.
Don't confuse it with
5
Related characters
4
Combination ideas
3Questions people ask
1Why does ⇇ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
More like this
12
How to type or find ⇇
- Also called
- leftleftarrows · llarr · two left arrows
- Search it as
- LaTeX arrow · MathML arrow · paired left arrows · category theory arrow · double left arrow
- Shows up in
- Anything that takes text · its shape is whatever your font draws
⇇\21C7Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.