Not Sign Symbol

A symbol from the Math Symbols collection. Click the symbol or the button below to copy.

Symbol: ¬
Unicode: U+00AC
HTML entity: ¬
Category: Math Symbols

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44 of 96 in the math symbols collection

About the not sign symbol

The glyph is a small horizontal line with a hook or downward turn at its right end, resembling a reversed uppercase L. This symbol is the logical negation operator, commonly read as "not." In mathematics, logic, and computer science, it prefixes a statement or variable to indicate its logical opposite—for example, ¬P means "not P" or "P is false."

It belongs to the Latin-1 Supplement block and is classified as a math symbol, so it is primarily used in formal notation rather than in ordinary text. While it appears in typefaces and documents that include mathematical or logical expressions, it is distinct from the similar-looking hyphen, minus sign, or tilde, and its specific shape helps avoid confusion in technical contexts.

How to type Not Sign

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

Hold Alt and type 0172 on the numeric keypad, then release Alt.
Or, in Word: type 00AC then press Alt + X.

Numeric keypad required (laptops: enable Num Lock or use Fn).

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 00AC.
Or: Control + Command + Space opens the Character Viewer — search by name.