Not Equal To
Block: Mathematical Operators
- Symbol
- ≠
- Unicode
U+2260- Unicode name
- NOT EQUAL TO
- Block
- Mathematical Operators
- Category
- Symbol, Math
- Type
- Unicode symbol
The ≠ sign means “not equal to.” In mathematics it states that two values or expressions do not have the same value. It is the single Unicode character U+2260, and it should not be confused with the two-character sequence != that is used as a not-equal operator in programming languages such as Python.
What ≠ States in Mathematics
The not-equal sign expresses inequality: it says that the expression on the left and the expression on the right do not represent the same value. For example, 5 ≠ 8 is true, while 5 ≠ 5 is false. In algebra, a statement such as x ≠ 0 is often used as a condition, because a later operation may only make sense when zero is excluded.
The sign is a relation between expressions rather than an arithmetic operation that produces a new number. That distinction matters when reading formulas: ≠ compares two sides, while symbols such as +, −, ×, or ÷ describe operations performed on values.
For a different unknown mark, try what is this ≠ symbol? and identify the character from its glyph, Unicode value, or appearance.
≠, =, ≈, and ≢ Are Different Relations
Several mathematical characters can look like variations of an equals sign but they make different claims. = states equality. ≠ explicitly denies equality. ≈ normally communicates an approximate rather than exact relationship, while ≢ is a separate Unicode character named NOT IDENTICAL TO.
These characters should not be substituted just because their shapes are similar. Unicode assigns them different code points because their meanings are distinct. When a copied formula contains the wrong relation sign, the text can remain visually plausible while changing what the expression says.
Why ≠ and != Are Not the Same Character
The glyph ≠ is one Unicode character. The spelling != consists of an exclamation mark followed by an equals sign. A programming language can define that two-character sequence as an operator without making it an encoding of U+2260.
Python, for example, documents != as one of its comparison operators. Replacing those two source-code characters with the visual symbol ≠ changes the underlying text and generally will not produce the same token. This is a practical example of why identifying the exact character matters instead of relying only on appearance.
Digital Representations of U+2260
The encoded identity can be represented without relying on the glyph. U+2260 = decimal 8800 = HTML ≠ / ≠. A Unicode escape-style representation is u2260. The UTF-8 byte sequence for the current glyph is E2 89 A0.
These forms are useful when a font does not display the symbol clearly, when debugging copied text, or when comparing characters that look alike. Numeric references and escapes identify the underlying code point or sequence rather than a particular font drawing.