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Vinculum Definition

Vinculum is a horizontal line placed above multiple quantities to indicate that they form a unit. Oftentimes, it is the horizontal line drawn as part of a fraction or radical, such as a + ba - b or √ a + b .

Usage

It is most commonly used to denote:

  • A radical 123456 

  • Repeating decimals (0. 111 )

  • The line segment  AB  joining two points A and B

  • The complex conjugate  z1 + z2 

  • Negation of a logical expression,  A ^ B  = ! (A ^ B).

Related Definitions

Sources

“Vinculum.” From Wolfram MathWorld, mathworld.wolfram.com/Vinculum.html.

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