Arrow 64

Unicode
U+21CF
Category
Arrows
HTML Entity
⇏
CSS
\21CF
The ⇏ symbol, formally known as the Rightwards Double Arrow with Stroke, is widely used in mathematical logic to represent "does not imply." It acts as the direct negation of the standard double arrow (⇒), which indicates a logical implication or conditional statement. Outside of formal proofs, it occasionally appears in technical notes to emphasize that one condition does not automatically lead to another.

How to Type

Windows
Alt+8655
macOS
Control+Command+Space then search "arrow with stroke"
Linux
Ctrl+Shift+U then type 21cf
HTML
⇏ or ⇏

In Programming

In mathematics and computer science, this symbol denotes non-implication in formal logic equations. When writing technical documentation in LaTeX, it is generated using the \nRightarrow command.

Tags

arrow discrete math arrow does not imply double formal logic symbol logical negation arrow negated negated double arrow negated implies non-implication symbol not right rightwards double arrow with stroke unicode logic

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