↠

Right Two Headed Arrow

Unicode
U+21A0
Category
Arrows
HTML Entity
↠
CSS
\21A0
The Right Two Headed Arrow (↠) is a standard Unicode directional symbol characterized by two stacked arrowheads pointing to the right. In mathematics, it is widely used to denote a surjective function (or epimorphism), indicating that a function maps completely onto its target set. Beyond advanced math, it often appears in technical documentation and user interfaces to represent a fast-forward action, a forced progression, or a multi-step process.

How to Type

Windows
In Word: type 21A0, then press Alt + X. Other apps have no standard Windows shortcut for it — copy it from this page
macOS
Control+Command+Space then search 'Right Two Headed Arrow'
Linux
Ctrl+Shift+U then 21A0
HTML
↠ or ↠

In Programming

In mathematics and category theory, ↠ specifically denotes a surjective function or epimorphism. It is also used in functional programming documentation to illustrate exhaustive mapping or sequential data flow.

Read full meaning article

Tags

arrow direction double arrowhead double head epimorphism fast fast forward forced progression math function right rightwards double head surjective function two-headed arrow

Related Symbols

← Left Arrow ↑ Up Arrow → Right Arrow ↓ Down Arrow ↔ Left Right Arrow ↕ Up Down Arrow ↖ North West Arrow ↗ North East Arrow ↘ South East Arrow ↙ South West Arrow ↞ Left Two Headed Arrow ↩ Left Arrow With Hook